### 26.3.1 INFORMATION\_SCHEMA General Table Reference

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 The following table summarizes `INFORMATION_SCHEMA` general tables. For greater detail, see the individual table descriptions.

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**Table 26.2 INFORMATION\_SCHEMA General Tables**

|                                                  Table Name                                                  |                                  Description                                  |Introduced|
|--------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|----------|
|    [`ADMINISTRABLE_ROLE_AUTHORIZATIONS`](information-schema-administrable-role-authorizations-table.html)    |               Grantable users or roles for current user or role               |  8.0.19  |
|                     [`APPLICABLE_ROLES`](information-schema-applicable-roles-table.html)                     |                       Applicable roles for current user                       |  8.0.19  |
|                       [`CHARACTER_SETS`](information-schema-character-sets-table.html)                       |                           Available character sets                            |          |
|                    [`CHECK_CONSTRAINTS`](information-schema-check-constraints-table.html)                    |                      Table and column CHECK constraints                       |  8.0.16  |
|[`COLLATION_CHARACTER_SET_APPLICABILITY`](information-schema-collation-character-set-applicability-table.html)|                  Character set applicable to each collation                   |          |
|                           [`COLLATIONS`](information-schema-collations-table.html)                           |                       Collations for each character set                       |          |
|                    [`COLUMN_PRIVILEGES`](information-schema-column-privileges-table.html)                    |                         Privileges defined on columns                         |          |
|                    [`COLUMN_STATISTICS`](information-schema-column-statistics-table.html)                    |                    Histogram statistics for column values                     |          |
|                              [`COLUMNS`](information-schema-columns-table.html)                              |                             Columns in each table                             |          |
|                   [`COLUMNS_EXTENSIONS`](information-schema-columns-extensions-table.html)                   |          Column attributes for primary and secondary storage engines          |  8.0.21  |
|                        [`ENABLED_ROLES`](information-schema-enabled-roles-table.html)                        |                     Roles enabled within current session                      |  8.0.19  |
|                              [`ENGINES`](information-schema-engines-table.html)                              |                           Storage engine properties                           |          |
|                               [`EVENTS`](information-schema-events-table.html)                               |                             Event Manager events                              |          |
|                                [`FILES`](information-schema-files-table.html)                                |                       Files that store tablespace data                        |          |
|                     [`KEY_COLUMN_USAGE`](information-schema-key-column-usage-table.html)                     |                      Which key columns have constraints                       |          |
|                             [`KEYWORDS`](information-schema-keywords-table.html)                             |                                MySQL keywords                                 |          |
|     [`ndb_transid_mysql_connection_map`](information-schema-ndb-transid-mysql-connection-map-table.html)     |                          NDB transaction information                          |          |
|                      [`OPTIMIZER_TRACE`](information-schema-optimizer-trace-table.html)                      |               Information produced by optimizer trace activity                |          |
|                           [`PARAMETERS`](information-schema-parameters-table.html)                           |          Stored routine parameters and stored function return values          |          |
|                           [`PARTITIONS`](information-schema-partitions-table.html)                           |                          Table partition information                          |          |
|                              [`PLUGINS`](information-schema-plugins-table.html)                              |                              Plugin information                               |          |
|                          [`PROCESSLIST`](information-schema-processlist-table.html)                          |                 Information about currently executing threads                 |          |
|                            [`PROFILING`](information-schema-profiling-table.html)                            |                        Statement profiling information                        |          |
|              [`REFERENTIAL_CONSTRAINTS`](information-schema-referential-constraints-table.html)              |                            Foreign key information                            |          |
|                      [`RESOURCE_GROUPS`](information-schema-resource-groups-table.html)                      |                          Resource group information                           |          |
|                   [`ROLE_COLUMN_GRANTS`](information-schema-role-column-grants-table.html)                   |Column privileges for roles available to or granted by currently enabled roles |  8.0.19  |
|                  [`ROLE_ROUTINE_GRANTS`](information-schema-role-routine-grants-table.html)                  |Routine privileges for roles available to or granted by currently enabled roles|  8.0.19  |
|                    [`ROLE_TABLE_GRANTS`](information-schema-role-table-grants-table.html)                    | Table privileges for roles available to or granted by currently enabled roles |  8.0.19  |
|                             [`ROUTINES`](information-schema-routines-table.html)                             |                          Stored routine information                           |          |
|                    [`SCHEMA_PRIVILEGES`](information-schema-schema-privileges-table.html)                    |                         Privileges defined on schemas                         |          |
|                             [`SCHEMATA`](information-schema-schemata-table.html)                             |                              Schema information                               |          |
|                  [`SCHEMATA_EXTENSIONS`](information-schema-schemata-extensions-table.html)                  |                                Schema options                                 |  8.0.22  |
|                  [`ST_GEOMETRY_COLUMNS`](information-schema-st-geometry-columns-table.html)                  |                 Columns in each table that store spatial data                 |          |
|         [`ST_SPATIAL_REFERENCE_SYSTEMS`](information-schema-st-spatial-reference-systems-table.html)         |                      Available spatial reference systems                      |          |
|                  [`ST_UNITS_OF_MEASURE`](information-schema-st-units-of-measure-table.html)                  |                      Acceptable units for ST\_Distance()                      |  8.0.14  |
|                           [`STATISTICS`](information-schema-statistics-table.html)                           |                            Table index statistics                             |          |
|                    [`TABLE_CONSTRAINTS`](information-schema-table-constraints-table.html)                    |                         Which tables have constraints                         |          |
|         [`TABLE_CONSTRAINTS_EXTENSIONS`](information-schema-table-constraints-extensions-table.html)         |     Table constraint attributes for primary and secondary storage engines     |  8.0.21  |
|                     [`TABLE_PRIVILEGES`](information-schema-table-privileges-table.html)                     |                         Privileges defined on tables                          |          |
|                               [`TABLES`](information-schema-tables-table.html)                               |                               Table information                               |          |
|                    [`TABLES_EXTENSIONS`](information-schema-tables-extensions-table.html)                    |          Table attributes for primary and secondary storage engines           |  8.0.21  |
|                          [`TABLESPACES`](information-schema-tablespaces-table.html)                          |                            Tablespace information                             |          |
|               [`TABLESPACES_EXTENSIONS`](information-schema-tablespaces-extensions-table.html)               |               Tablespace attributes for primary storage engines               |  8.0.21  |
|                             [`TRIGGERS`](information-schema-triggers-table.html)                             |                              Trigger information                              |          |
|                      [`USER_ATTRIBUTES`](information-schema-user-attributes-table.html)                      |                         User comments and attributes                          |  8.0.21  |
|                      [`USER_PRIVILEGES`](information-schema-user-privileges-table.html)                      |                     Privileges defined globally per user                      |          |
|                   [`VIEW_ROUTINE_USAGE`](information-schema-view-routine-usage-table.html)                   |                        Stored functions used in views                         |  8.0.13  |
|                     [`VIEW_TABLE_USAGE`](information-schema-view-table-usage-table.html)                     |                        Tables and views used in views                         |  8.0.13  |
|                                [`VIEWS`](information-schema-views-table.html)                                |                               View information                                |          |

