ASchema Mapin ServiceNow provides avisual representationof a table's relationships, including itsextensions, references, and dependencies. This is useful for administrators and developers to understandhow data is structuredwithin an instance.
Navigate to System Definition > Tables
Select the desired table(e.g.,incident,task,cmdb_ci, etc.)
Scroll to the "Related Links" sectionat the bottom of the form
Click "Show Schema Map"
How to Access the Schema Map for a Table:This will open agraphical representationof the table, showing:
Tables thatextend fromthe selected table
Tables thatreferencethe selected table
Fields that establish relationships
A. System Dictionary > Show Schema Map; Select Table
The Schema Map isnot accessed via the System Dictionary.
C. System Definition > Show Schema Map; Select Table
There is nodirect "Show Schema Map" menuunder System Definition; you must go throughTablesfirst.
D. System Definition > Dictionary: Select Table; Go to Related Links and click Show Schema Map
TheDictionarymodule does not provide a Schema Map option directly for tables.
Schema Maps Overview
Viewing Table Relationships with Schema Map
Why Other Options Are Incorrect?Official ServiceNow Documentation Reference:
