From f9cb2ad2d08752663d583e54dfd7b11b49fbe53c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maur=C3=ADcio=20Meneghini=20Fauth?= <mauricio@fauth.dev>
Date: Sun, 24 Mar 2019 17:23:42 -0300
Subject: [PATCH] Create PhpMyAdmin\InternalRelations
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Extracts libraries/information_schema_relations.inc.php and
libraries/mysql_relations.inc.php relations to InternalRelations class.

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>
---
 libraries/classes/InternalRelations.php       | 505 ++++++++++++++++++
 libraries/classes/Relation.php                |  10 +-
 .../information_schema_relations.inc.php      | 327 ------------
 libraries/mysql_relations.inc.php             | 170 ------
 4 files changed, 509 insertions(+), 503 deletions(-)
 create mode 100644 libraries/classes/InternalRelations.php
 delete mode 100644 libraries/information_schema_relations.inc.php
 delete mode 100644 libraries/mysql_relations.inc.php

diff --git a/libraries/classes/InternalRelations.php b/libraries/classes/InternalRelations.php
new file mode 100644
index 0000000000..b5ba36f0f3
--- /dev/null
+++ b/libraries/classes/InternalRelations.php
@@ -0,0 +1,505 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Internal relations for information schema and mysql databases.
+ * @package PhpMyAdmin
+ */
+declare(strict_types=1);
+
+namespace PhpMyAdmin;
+
+/**
+ * Internal relations for information schema and mysql databases.
+ * @package PhpMyAdmin
+ */
+class InternalRelations
+{
+    /**
+     * @var array
+     */
+    private static $informationSchema = [
+        'CHARACTER_SETS' => [
+            'DEFAULT_COLLATE_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+        ],
+        'COLLATIONS' => [
+            'CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+        ],
+        'COLLATION_CHARACTER_SET_APPLICABILITY' => [
+            'CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'COLUMNS' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'COLUMN_PRIVILEGES' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'EVENTS' => [
+            'EVENT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_CLIENT' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_CONNECTION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'DATABASE_COLLATION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'FILES' => [
+            'TABLESPACE_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'TABLESPACES',
+                'foreign_field' => 'TABLESPACE_NAME',
+            ],
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'COLLATION_CONNECTION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'ENGINE' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'ENGINES',
+                'foreign_field' => 'ENGINE',
+            ]
+        ],
+        'KEY_COLUMN_USAGE' => [
+            'CONSTRAINT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'REFERENCED_TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'PARAMETERS' => [
+            'SPECIFIC_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'PARTITIONS' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'TABLESPACE_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'TABLESPACES',
+                'foreign_field' => 'TABLESPACE_NAME',
+            ],
+        ],
+        'PROCESSLIST' => [
+            'DB' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'REFERENTIAL_CONSTRAINTS' => [
+            'CONSTRAINT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'UNIQUE_CONSTRAINT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'ROUTINES' => [
+            'ROUTINE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'CHARACTER_SET_CLIENT' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_CONNECTION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'DATABASE_COLLATION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'SCHEMATA' => [
+            'DEFAULT_CHARACTER_SET_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'DEFAULT_COLLATION_NAME' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'SCHEMA_PRIVILEGES' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'STATISTICS' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'INDEX_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'TABLES' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'TABLE_COLLATION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'ENGINE' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'ENGINES',
+                'foreign_field' => 'ENGINE',
+            ],
+        ],
+        'TABLESAPCES' => [
+            'ENGINE' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'ENGINES',
+                'foreign_field' => 'ENGINE',
+            ],
+        ],
+        'TABLE_CONSTRAINTS' => [
+            'CONSTRAINT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ]
+        ],
+        'TABLE_PRIVILEGES' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'TRIGGERS' => [
+            'TRIGGER_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'EVENT_OBJECT_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_CLIENT' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_CONNECTION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'DATABASE_COLLATION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ]
+        ],
+        'VIEWS' => [
+            'TABLE_SCHEMA' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'CHARACTER_SET_CLIENT' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'COLLATION_CONNECTION' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+        ]
+    ];
+
+    /**
+     * @var array
+     */
+    private static $mysql = [
+        'columns_priv' => [
+            'Db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'db' => [
+            'Db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'event' => [
+            'db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'character_set_client' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'collation_connection' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'db_collation' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+        ],
+        'help_category' => [
+            'parent_category_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'help_category',
+                'foreign_field' => 'help_category_id',
+            ],
+        ],
+        'help_relation' => [
+            'help_topic_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'help_topic',
+                'foreign_field' => 'help_topic_id',
+            ],
+            'help_keyword_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'help_keyword',
+                'foreign_field' => 'help_keyword_id',
+            ],
+        ],
+        'help_topic' => [
+            'help_category_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'help_category',
+                'foreign_field' => 'help_category_id',
+            ],
+        ],
+        'innodb_index_stats' => [
+            'database_name' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'innodb_table_stats' => [
+            'database_name' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'proc' => [
+            'db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+            'character_set_client' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'CHARACTER_SETS',
+                'foreign_field' => 'CHARACTER_SET_NAME',
+            ],
+            'collation_connection' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+            'db_collation' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'COLLATIONS',
+                'foreign_field' => 'COLLATION_NAME',
+            ],
+        ],
+        'proc_priv' => [
+            'Db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'servers' => [
+            'Db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'slow_log' => [
+            'db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'tables_priv' => [
+            'Db' => [
+                'foreign_db' => 'information_schema',
+                'foreign_table' => 'SCHEMATA',
+                'foreign_field' => 'SCHEMA_NAME',
+            ],
+        ],
+        'time_zone_name' => [
+            'Time_zone_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'time_zone',
+                'foreign_field' => 'Time_zone_id',
+            ],
+        ],
+        'time_zone_transition' => [
+            'Time_zone_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'time_zone',
+                'foreign_field' => 'Time_zone_id',
+            ],
+            'Transition_time' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'time_zone_leap_second',
+                'foreign_field' => 'Transition_time',
+            ],
+        ],
+        'time_zone_transition_type' => [
+            'Time_zone_id' => [
+                'foreign_db' => 'mysql',
+                'foreign_table' => 'time_zone',
+                'foreign_field' => 'Time_zone_id',
+            ],
+        ],
+    ];
+
+    /**
+     * @return array
+     */
+    public static function getInformationSchema(): array
+    {
+        return self::$informationSchema;
+    }
+
+    /**
+     * @return array
+     */
+    public static function getMySql(): array
+    {
+        return self::$mysql;
+    }
+}
diff --git a/libraries/classes/Relation.php b/libraries/classes/Relation.php
index e70c6499d2..1ce9e722be 100644
--- a/libraries/classes/Relation.php
+++ b/libraries/classes/Relation.php
@@ -841,14 +841,12 @@ class Relation
             && ($source == 'internal' || $source == 'both')
         ) {
             if ($isInformationSchema) {
-                $relations_key = 'information_schema_relations';
-                include_once ROOT_PATH . 'libraries/information_schema_relations.inc.php';
+                $internalRelations = InternalRelations::getInformationSchema();
             } else {
-                $relations_key = 'mysql_relations';
-                include_once ROOT_PATH . 'libraries/mysql_relations.inc.php';
+                $internalRelations = InternalRelations::getMySql();
             }
-            if (isset($GLOBALS[$relations_key][$table])) {
-                foreach ($GLOBALS[$relations_key][$table] as $field => $relations) {
+            if (isset($internalRelations[$table])) {
+                foreach ($internalRelations[$table] as $field => $relations) {
                     if ((strlen($column) === 0 || $column == $field)
                         && (! isset($foreign[$field])
                         || strlen($foreign[$field]) === 0)
diff --git a/libraries/information_schema_relations.inc.php b/libraries/information_schema_relations.inc.php
deleted file mode 100644
index 1f8d6294e8..0000000000
--- a/libraries/information_schema_relations.inc.php
+++ /dev/null
@@ -1,327 +0,0 @@
-<?php
-/* vim: set expandtab sw=4 ts=4 sts=4: */
-/**
- * Internal relations for information schema.
- *
- * @package PhpMyAdmin
- */
-declare(strict_types=1);
-
-if (! defined('PHPMYADMIN')) {
-    exit;
-}
-
-/**
- *
- */
-$GLOBALS['information_schema_relations'] = [
-    'CHARACTER_SETS' => [
-        'DEFAULT_COLLATE_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-    ],
-    'COLLATIONS' => [
-        'CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-    ],
-    'COLLATION_CHARACTER_SET_APPLICABILITY' => [
-        'CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'COLUMNS' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'COLUMN_PRIVILEGES' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'EVENTS' => [
-        'EVENT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_CLIENT' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_CONNECTION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'DATABASE_COLLATION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'FILES' => [
-        'TABLESPACE_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'TABLESPACES',
-            'foreign_field' => 'TABLESPACE_NAME',
-        ],
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'COLLATION_CONNECTION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'ENGINE' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'ENGINES',
-            'foreign_field' => 'ENGINE',
-        ]
-    ],
-    'KEY_COLUMN_USAGE' => [
-        'CONSTRAINT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'REFERENCED_TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'PARAMETERS' => [
-        'SPECIFIC_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'PARTITIONS' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'TABLESPACE_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'TABLESPACES',
-            'foreign_field' => 'TABLESPACE_NAME',
-        ],
-    ],
-    'PROCESSLIST' => [
-        'DB' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'REFERENTIAL_CONSTRAINTS' => [
-        'CONSTRAINT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'UNIQUE_CONSTRAINT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'ROUTINES' => [
-        'ROUTINE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'CHARACTER_SET_CLIENT' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_CONNECTION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'DATABASE_COLLATION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'SCHEMATA' => [
-        'DEFAULT_CHARACTER_SET_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'DEFAULT_COLLATION_NAME' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'SCHEMA_PRIVILEGES' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'STATISTICS' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'INDEX_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'TABLES' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'TABLE_COLLATION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'ENGINE' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'ENGINES',
-            'foreign_field' => 'ENGINE',
-        ],
-    ],
-    'TABLESAPCES' => [
-        'ENGINE' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'ENGINES',
-            'foreign_field' => 'ENGINE',
-        ],
-    ],
-    'TABLE_CONSTRAINTS' => [
-        'CONSTRAINT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ]
-    ],
-    'TABLE_PRIVILEGES' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'TRIGGERS' => [
-        'TRIGGER_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'EVENT_OBJECT_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_CLIENT' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_CONNECTION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'DATABASE_COLLATION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ]
-    ],
-    'VIEWS' => [
-        'TABLE_SCHEMA' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'CHARACTER_SET_CLIENT' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'COLLATION_CONNECTION' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-    ]
-];
diff --git a/libraries/mysql_relations.inc.php b/libraries/mysql_relations.inc.php
deleted file mode 100644
index c58e7150b7..0000000000
--- a/libraries/mysql_relations.inc.php
+++ /dev/null
@@ -1,170 +0,0 @@
-<?php
-/* vim: set expandtab sw=4 ts=4 sts=4: */
-/**
- * Internal relations for mysql database.
- *
- * @package PhpMyAdmin
- */
-declare(strict_types=1);
-
-if (! defined('PHPMYADMIN')) {
-    exit;
-}
-
-/**
- * Internal relations for mysql database.
- */
-$GLOBALS['mysql_relations'] = [
-    'columns_priv' => [
-        'Db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'db' => [
-        'Db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'event' => [
-        'db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'character_set_client' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'collation_connection' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'db_collation' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-    ],
-    'help_category' => [
-        'parent_category_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'help_category',
-            'foreign_field' => 'help_category_id',
-        ],
-    ],
-    'help_relation' => [
-        'help_topic_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'help_topic',
-            'foreign_field' => 'help_topic_id',
-        ],
-        'help_keyword_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'help_keyword',
-            'foreign_field' => 'help_keyword_id',
-        ],
-    ],
-    'help_topic' => [
-        'help_category_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'help_category',
-            'foreign_field' => 'help_category_id',
-        ],
-    ],
-    'innodb_index_stats' => [
-        'database_name' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'innodb_table_stats' => [
-        'database_name' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'proc' => [
-        'db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-        'character_set_client' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'CHARACTER_SETS',
-            'foreign_field' => 'CHARACTER_SET_NAME',
-        ],
-        'collation_connection' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-        'db_collation' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'COLLATIONS',
-            'foreign_field' => 'COLLATION_NAME',
-        ],
-    ],
-    'proc_priv' => [
-        'Db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'servers' => [
-        'Db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'slow_log' => [
-        'db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'tables_priv' => [
-        'Db' => [
-            'foreign_db'    => 'information_schema',
-            'foreign_table' => 'SCHEMATA',
-            'foreign_field' => 'SCHEMA_NAME',
-        ],
-    ],
-    'time_zone_name' => [
-        'Time_zone_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'time_zone',
-            'foreign_field' => 'Time_zone_id',
-        ],
-    ],
-    'time_zone_transition' => [
-        'Time_zone_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'time_zone',
-            'foreign_field' => 'Time_zone_id',
-        ],
-        'Transition_time' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'time_zone_leap_second',
-            'foreign_field' => 'Transition_time',
-        ],
-    ],
-    'time_zone_transition_type' => [
-        'Time_zone_id' => [
-            'foreign_db'    => 'mysql',
-            'foreign_table' => 'time_zone',
-            'foreign_field' => 'Time_zone_id',
-        ],
-    ],
-];