Data dictionary tables
Access details related to tables, columns, and field labels in your instance.
Tables
All of the information on an instance is stored in tables, which consist of a series of records. The record in turn holds a series of fields that hold the individual bits of data and can be viewed either as a list or a form.
The Tables [sys_db_object] table contains a record for each table in the database.
Access the Tables [sys_db_object] table by navigating to System Definition > Tables. From the Tables list, an administrator can create a custom table, or select an existing table to view table details. In the table form, an administrator can access table administration options.
- View, add, or modify columns with a searchable and sortable embedded list, define the auto-number format, make the table extendable by other tables, and create modules for the table.
- Launch a schema map for a table by clicking the Show Schema Map related link.
- Open the dictionary entries for the table by right-clicking the form header and selecting Show Dictionary Record.
- Navigate directly to the default list or form view for the table by clicking the Show List or Show Form related link.
- Delete all records from a table by clicking the Delete All Records.
The following image shows a list of the tables that extend the Application File table.
[Omitted image "Tables2.png"] Alt text: A list of tables that extend the Application File table.
Dictionary Entries
The Dictionary Entries [sys_dictionary] table, also called the System Dictionary, defines every table and field in the system. It contains information about data type, character limit, default value, dependency, and other attributes of a field.
Access the system dictionary in one of these ways:
- To see the system dictionary list view, navigate to System Definition > Dictionary.
- To view particular dictionary definition, right-click the list header, form header, or field label, and select Configure Dictionary.
The following image shows a filtered list of dictionary entries for the Incident table and the Task table, which it extends.
[Omitted image "DictionaryIncTask2.png"] Alt text: A filtered list of dictionary entries for the Incident table and the Task table.
Field Labels
The Field Labels [sys_documentation] table, also called the Language File, contains information about the labels and hints for each table and column in the system.
Access the language file in one of these ways:
- To see the list view, navigate to System Definition > Language File.
- To see the field label for a particular field, right-click the field label on the form.
The following image shows the language file filtered to display only labels on the Incident table.
[Omitted image "Fieldlabels2.png"] Alt text: A list showing field labels on the Incident table.
Parent Topic:Exploring ServiceNow AI Platform tables
--- title: Data dictionary tables description: Access details related to tables, columns, and field labels in your instance. locale: en-US canonical_url: https://www.servicenow.com/docs/r/platform-administration/table-administration-and-data-management/c\_DataDictionaryTables.html release: brazil product: Table Administration and Data Management classification: table-administration-and-data-management topic_type: concept last_updated: "2026-09-10" reading_time_minutes: 2 breadcrumb: [Exploring tables, Table admin, Tables and data, Configure core features, Administer the ServiceNow AI Platform] --- # Data dictionary tables Access details related to tables, columns, and field labels in your instance. ## Tables All of the information on an instance is stored in tables, which consist of a series of records. The record in turn holds a series of fields that hold the individual bits of data and can be viewed either as a list or a form. The Tables \[sys\_db\_object\] table contains a record for each table in the database. Access the Tables \[sys\_db\_object\] table by navigating to **System Definition** > **Tables**. From the Tables list, an administrator can create a custom table, or select an existing table to view table details. In the table form, an administrator can access table administration options. - View, add, or modify columns with a searchable and sortable embedded list, define the auto-number format, make the table extendable by other tables, and create modules for the table. - Launch a schema map for a table by clicking the **Show Schema Map** related link. - Open the dictionary entries for the table by right-clicking the form header and selecting **Show Dictionary Record**. - Navigate directly to the default list or form view for the table by clicking the **Show List** or **Show Form** related link. - Delete all records from a table by clicking the **Delete All Records**. The following image shows a list of the tables that extend the Application File table. \[Omitted image "Tables2.png"\] Alt text: A list of tables that extend the Application File table. ## Dictionary Entries The Dictionary Entries \[sys\_dictionary\] table, also called the **System Dictionary**, defines every table and field in the system. It contains information about data type, character limit, default value, dependency, and other attributes of a field. Access the system dictionary in one of these ways: - To see the system dictionary list view, navigate to **System Definition** > **Dictionary**. - To view particular dictionary definition, right-click the list header, form header, or field label, and select **Configure Dictionary**. The following image shows a filtered list of dictionary entries for the Incident table and the Task table, which it extends. \[Omitted image "DictionaryIncTask2.png"\] Alt text: A filtered list of dictionary entries for the Incident table and the Task table. ## Field Labels The Field Labels \[sys\_documentation\] table, also called the **Language File**, contains information about the labels and hints for each table and column in the system. Access the language file in one of these ways: - To see the list view, navigate to **System Definition** > **Language File**. - To see the field label for a particular field, right-click the field label on the form. The following image shows the language file filtered to display only labels on the Incident table. \[Omitted image "Fieldlabels2.png"\] Alt text: A list showing field labels on the Incident table. **Parent Topic:**[Exploring ServiceNow AI Platform tables](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/platform-administration/table-administration-and-data-management/exploring-table-administration.md)
| title | Data dictionary tables |
| description | Access details related to tables, columns, and field labels in your instance. |
| locale | en-US |
| canonical_url | https://www.servicenow.com/docs/r/platform-administration/table-administration-and-data-management/c\_DataDictionaryTables.html |
| release | brazil |
| product | Table Administration and Data Management |
| classification | table-administration-and-data-management |
| topic_type | concept |
| last_updated | 2026-09-10 |
| reading_time_minutes | 2 |
| breadcrumb | Exploring tablesTable adminTables and dataConfigure core featuresAdminister the ServiceNow AI Platform |