Index: src/wp-admin/includes/class-wp-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-list-table.php	(revision 43985)
+++ src/wp-admin/includes/class-wp-list-table.php	(working copy)
@@ -501,7 +501,7 @@
 	 *
 	 * @since 3.1.0
 	 *
-	 * @global wpdb      $wpdb
+	 * @global wpdb      $wpdb      WordPress database abstraction object.
 	 * @global WP_Locale $wp_locale
 	 *
 	 * @param string $post_type
Index: src/wp-admin/includes/class-wp-ms-sites-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-ms-sites-list-table.php	(revision 43985)
+++ src/wp-admin/includes/class-wp-ms-sites-list-table.php	(working copy)
@@ -63,7 +63,7 @@
 	 *
 	 * @global string $s
 	 * @global string $mode
-	 * @global wpdb   $wpdb
+	 * @global wpdb   $wpdb WordPress database abstraction object.
 	 */
 	public function prepare_items() {
 		global $s, $mode, $wpdb;
Index: src/wp-admin/includes/class-wp-ms-users-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-ms-users-list-table.php	(revision 43985)
+++ src/wp-admin/includes/class-wp-ms-users-list-table.php	(working copy)
@@ -28,7 +28,7 @@
 	 *
 	 * @global string $usersearch
 	 * @global string $role
-	 * @global wpdb   $wpdb
+	 * @global wpdb   $wpdb WordPress database abstraction object.
 	 * @global string $mode
 	 */
 	public function prepare_items() {
Index: src/wp-admin/includes/class-wp-posts-list-table.php
===================================================================
--- src/wp-admin/includes/class-wp-posts-list-table.php	(revision 43985)
+++ src/wp-admin/includes/class-wp-posts-list-table.php	(working copy)
@@ -67,7 +67,7 @@
 	 * @see WP_List_Table::__construct() for more information on default arguments.
 	 *
 	 * @global WP_Post_Type $post_type_object
-	 * @global wpdb         $wpdb
+	 * @global wpdb         $wpdb             WordPress database abstraction object.
 	 *
 	 * @param array $args An associative array of arguments.
 	 */
@@ -660,7 +660,7 @@
 	}
 
 	/**
-	 * @global wpdb    $wpdb
+	 * @global wpdb    $wpdb WordPress database abstraction object.
 	 * @global WP_Post $post
 	 * @param array $pages
 	 * @param int $pagenum
Index: src/wp-admin/includes/media.php
===================================================================
--- src/wp-admin/includes/media.php	(revision 43985)
+++ src/wp-admin/includes/media.php	(working copy)
@@ -2349,7 +2349,7 @@
  *
  * @since 2.5.0
  *
- * @global wpdb      $wpdb
+ * @global wpdb      $wpdb            WordPress database abstraction object.
  * @global WP_Query  $wp_query
  * @global WP_Locale $wp_locale
  * @global string    $type
Index: src/wp-admin/includes/schema.php
===================================================================
--- src/wp-admin/includes/schema.php	(revision 43985)
+++ src/wp-admin/includes/schema.php	(working copy)
@@ -11,7 +11,7 @@
 /**
  * Declare these as global in case schema.php is included from a function.
  *
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb            WordPress database abstraction object.
  * @global array  $wp_queries
  * @global string $charset_collate
  */
@@ -867,7 +867,7 @@
  *
  * @since 3.0.0
  *
- * @global wpdb       $wpdb
+ * @global wpdb       $wpdb          WordPress database abstraction object.
  * @global object     $current_site
  * @global int        $wp_db_version
  * @global WP_Rewrite $wp_rewrite
Index: src/wp-admin/includes/update-core.php
===================================================================
--- src/wp-admin/includes/update-core.php	(revision 43985)
+++ src/wp-admin/includes/update-core.php	(working copy)
@@ -862,7 +862,7 @@
  * @global WP_Filesystem_Base $wp_filesystem
  * @global array              $_old_files
  * @global array              $_new_bundled_files
- * @global wpdb               $wpdb
+ * @global wpdb               $wpdb                   WordPress database abstraction object.
  * @global string             $wp_version
  * @global string             $required_php_version
  * @global string             $required_mysql_version
Index: src/wp-admin/includes/upgrade.php
===================================================================
--- src/wp-admin/includes/upgrade.php	(revision 43985)
+++ src/wp-admin/includes/upgrade.php	(working copy)
@@ -121,7 +121,7 @@
  *
  * @since 2.1.0
  *
- * @global wpdb       $wpdb
+ * @global wpdb       $wpdb         WordPress database abstraction object.
  * @global WP_Rewrite $wp_rewrite
  * @global string     $table_prefix
  *
@@ -1411,7 +1411,7 @@
  * @since 3.3.0
  *
  * @global int   $wp_current_db_version
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb                  WordPress database abstraction object.
  * @global array $wp_registered_widgets
  * @global array $sidebars_widgets
  */
@@ -1486,7 +1486,7 @@
  * @since 3.4.0
  *
  * @global int   $wp_current_db_version
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb                  WordPress database abstraction object.
  */
 function upgrade_340() {
 	global $wp_current_db_version, $wpdb;
@@ -1523,7 +1523,7 @@
  * @since 3.5.0
  *
  * @global int   $wp_current_db_version
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb                  WordPress database abstraction object.
  */
 function upgrade_350() {
 	global $wp_current_db_version, $wpdb;
@@ -1619,7 +1619,7 @@
  * @since 4.2.0
  *
  * @global int   $wp_current_db_version
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb                  WordPress database abstraction object.
  */
 function upgrade_420() {}
 
@@ -1841,7 +1841,7 @@
  * @since 3.0.0
  *
  * @global int   $wp_current_db_version
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb                  WordPress database abstraction object.
  */
 function upgrade_network() {
 	global $wp_current_db_version, $wpdb;
@@ -1986,7 +1986,7 @@
  *
  * @since 1.0.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $table_name Database table name to create.
  * @param string $create_ddl SQL statement to create table.
@@ -2016,7 +2016,7 @@
  *
  * @since 1.0.1
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $table Database table name.
  * @param string $index Index name to drop.
@@ -2039,7 +2039,7 @@
  *
  * @since 1.0.1
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $table Database table name.
  * @param string $index Database table index column.
@@ -2057,7 +2057,7 @@
  *
  * @since 1.3.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $table_name  The table name to modify.
  * @param string $column_name The column name to add to the table.
@@ -2089,7 +2089,7 @@
  *
  * @since 4.2.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $table The table to convert.
  * @return bool true if the table was converted, false if it wasn't.
@@ -2132,7 +2132,7 @@
  *
  * @since 1.2.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @return stdClass List of options.
  */
@@ -2156,7 +2156,7 @@
  * @since 1.5.1
  * @access private
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string $setting Option name.
  * @return mixed
@@ -2217,7 +2217,7 @@
  *
  * @since 1.5.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  *
  * @param string|array $queries Optional. The query to run. Can be multiple queries
  *                              in an array, or a string of queries separated by
@@ -2845,7 +2845,7 @@
  *
  * @since 2.1.0
  *
- * @global wpdb  $wpdb
+ * @global wpdb  $wpdb WordPress database abstraction object.
  */
 function wp_check_mysql_version() {
 	global $wpdb;
@@ -2954,7 +2954,7 @@
  *
  * @since 3.0.0
  *
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb            WordPress database abstraction object.
  * @global string $charset_collate
  */
 function install_global_terms() {
Index: src/wp-admin/install.php
===================================================================
--- src/wp-admin/install.php	(revision 43985)
+++ src/wp-admin/install.php	(working copy)
@@ -225,7 +225,7 @@
  * @global string $wp_version
  * @global string $required_php_version
  * @global string $required_mysql_version
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb                   WordPress database abstraction object.
  */
 global $wp_version, $required_php_version, $required_mysql_version;
 
Index: src/wp-admin/update-core.php
===================================================================
--- src/wp-admin/update-core.php	(revision 43985)
+++ src/wp-admin/update-core.php	(working copy)
@@ -25,7 +25,7 @@
 /**
  *
  * @global string $wp_local_package
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb             WordPress database abstraction object.
  *
  * @staticvar bool $first_pass
  *
Index: src/wp-admin/upgrade.php
===================================================================
--- src/wp-admin/upgrade.php	(revision 43985)
+++ src/wp-admin/upgrade.php	(working copy)
@@ -39,7 +39,7 @@
  * @global string $wp_version
  * @global string $required_php_version
  * @global string $required_mysql_version
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb                   WordPress database abstraction object.
  */
 global $wp_version, $required_php_version, $required_mysql_version;
 
Index: src/wp-includes/class-wp-customize-manager.php
===================================================================
--- src/wp-includes/class-wp-customize-manager.php	(revision 43985)
+++ src/wp-includes/class-wp-customize-manager.php	(working copy)
@@ -3278,7 +3278,7 @@
 	 *
 	 * @since 4.7.0
 	 * @see _wp_customize_publish_changeset()
-	 * @global wpdb $wpdb
+	 * @global wpdb $wpdb WordPress database abstraction object.
 	 *
 	 * @param int $changeset_post_id ID for customize_changeset post. Defaults to the changeset for the current manager instance.
 	 * @return true|WP_Error True or error info.
Index: src/wp-includes/comment-template.php
===================================================================
--- src/wp-includes/comment-template.php	(revision 43985)
+++ src/wp-includes/comment-template.php	(working copy)
@@ -1286,7 +1286,7 @@
  *
  * @global WP_Query   $wp_query
  * @global WP_Post    $post
- * @global wpdb       $wpdb
+ * @global wpdb       $wpdb             WordPress database abstraction object.
  * @global int        $id
  * @global WP_Comment $comment
  * @global string     $user_login
Index: src/wp-includes/general-template.php
===================================================================
--- src/wp-includes/general-template.php	(revision 43985)
+++ src/wp-includes/general-template.php	(working copy)
@@ -1673,7 +1673,7 @@
  *
  * @see get_archives_link()
  *
- * @global wpdb      $wpdb
+ * @global wpdb      $wpdb      WordPress database abstraction object.
  * @global WP_Locale $wp_locale
  *
  * @param string|array $args {
@@ -1915,7 +1915,7 @@
  *
  * @since 1.0.0
  *
- * @global wpdb      $wpdb
+ * @global wpdb      $wpdb      WordPress database abstraction object.
  * @global int       $m
  * @global int       $monthnum
  * @global int       $year
Index: src/wp-includes/media.php
===================================================================
--- src/wp-includes/media.php	(revision 43985)
+++ src/wp-includes/media.php	(working copy)
@@ -3297,7 +3297,7 @@
  * @since 3.5.0
  *
  * @global int       $content_width
- * @global wpdb      $wpdb
+ * @global wpdb      $wpdb          WordPress database abstraction object.
  * @global WP_Locale $wp_locale
  *
  * @param array $args {
Index: src/wp-includes/ms-blogs.php
===================================================================
--- src/wp-includes/ms-blogs.php	(revision 43985)
+++ src/wp-includes/ms-blogs.php	(working copy)
@@ -787,7 +787,7 @@
  * @see restore_current_blog()
  * @since MU (3.0.0)
  *
- * @global wpdb            $wpdb
+ * @global wpdb            $wpdb               WordPress database abstraction object.
  * @global int             $blog_id
  * @global array           $_wp_switched_stack
  * @global bool            $switched
@@ -867,7 +867,7 @@
  * @see switch_to_blog()
  * @since MU (3.0.0)
  *
- * @global wpdb            $wpdb
+ * @global wpdb            $wpdb               WordPress database abstraction object.
  * @global array           $_wp_switched_stack
  * @global int             $blog_id
  * @global bool            $switched
Index: src/wp-includes/ms-functions.php
===================================================================
--- src/wp-includes/ms-functions.php	(revision 43985)
+++ src/wp-includes/ms-functions.php	(working copy)
@@ -561,7 +561,7 @@
  *
  * @since MU (3.0.0)
  *
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb   WordPress database abstraction object.
  * @global string $domain
  *
  * @param string         $blogname   The blog name provided by the user. Must be unique.
@@ -1425,7 +1425,7 @@
  *
  * @since MU (3.0.0)
  *
- * @global wpdb     $wpdb
+ * @global wpdb     $wpdb     WordPress database abstraction object.
  * @global WP_Roles $wp_roles
  *
  * @param int    $blog_id    The value returned by insert_blog().
Index: src/wp-includes/option.php
===================================================================
--- src/wp-includes/option.php	(revision 43985)
+++ src/wp-includes/option.php	(working copy)
@@ -1165,7 +1165,7 @@
  *
  * @see get_option()
  *
- * @global wpdb $wpdb
+ * @global wpdb $wpdb WordPress database abstraction object.
  *
  * @param int      $network_id ID of the network. Can be null to default to the current network ID.
  * @param string   $option     Name of option to retrieve. Expected to not be SQL-escaped.
@@ -1293,7 +1293,7 @@
  *
  * @see add_option()
  *
- * @global wpdb $wpdb
+ * @global wpdb $wpdb WordPress database abstraction object.
  *
  * @param int    $network_id ID of the network. Can be null to default to the current network ID.
  * @param string $option     Name of option to add. Expected to not be SQL-escaped.
@@ -1408,7 +1408,7 @@
  *
  * @see delete_option()
  *
- * @global wpdb $wpdb
+ * @global wpdb $wpdb WordPress database abstraction object.
  *
  * @param int    $network_id ID of the network. Can be null to default to the current network ID.
  * @param string $option     Name of option to remove. Expected to not be SQL-escaped.
@@ -1495,7 +1495,7 @@
  *
  * @see update_option()
  *
- * @global wpdb $wpdb
+ * @global wpdb $wpdb WordPress database abstraction object.
  *
  * @param int      $network_id ID of the network. Can be null to default to the current network ID.
  * @param string   $option     Name of option. Expected to not be SQL-escaped.
Index: src/wp-includes/template.php
===================================================================
--- src/wp-includes/template.php	(revision 43985)
+++ src/wp-includes/template.php	(working copy)
@@ -663,7 +663,7 @@
  * @global bool       $wp_did_header
  * @global WP_Query   $wp_query
  * @global WP_Rewrite $wp_rewrite
- * @global wpdb       $wpdb
+ * @global wpdb       $wpdb          WordPress database abstraction object.
  * @global string     $wp_version
  * @global WP         $wp
  * @global int        $id
Index: src/wp-includes/theme.php
===================================================================
--- src/wp-includes/theme.php	(revision 43985)
+++ src/wp-includes/theme.php	(working copy)
@@ -3081,7 +3081,7 @@
  * @param string   $new_status Transition to this post status.
  * @param string   $old_status Previous post status.
  * @param \WP_Post $post       Post data.
- * @global wpdb $wpdb
+ * @global wpdb $wpdb WordPress database abstraction object.
  */
 function _wp_keep_alive_customize_changeset_dependent_auto_drafts( $new_status, $old_status, $post ) {
 	global $wpdb;
Index: src/wp-includes/update.php
===================================================================
--- src/wp-includes/update.php	(revision 43985)
+++ src/wp-includes/update.php	(working copy)
@@ -15,7 +15,7 @@
  *
  * @since 2.3.0
  * @global string $wp_version Used to check against the newest WordPress version.
- * @global wpdb   $wpdb
+ * @global wpdb   $wpdb WordPress database abstraction object.
  * @global string $wp_local_package
  *
  * @param array $extra_stats Extra statistics to report to the WordPress.org API.