When creating acustom table in ServiceNow, the platform automatically assigns a table name prefixed with"u_"to differentiatecustomtables fromout-of-the-box (OOB) tables.
The default prefix"u_"is applied to allcustom global tables.
The table name follows the format:"u_" + [custom name].
Example:
If you create a table named"abc", the system assigns it the table name:u_abc.
All custom tables created by usersautomatically receive the "u_" prefix.
Prevents conflicts withServiceNow’s internal tables.
Ensurescustom tables are easy to identify.
Naming Convention for Custom Tables:Why "C. u_abc" is Correct?
A. snc_abc – Incorrect
"snc_" is not used for custom tables; it is reserved forinternal ServiceNow functionality.
B. abc – Incorrect
Custom tablesdo not use raw names; they always include a prefix (u_).
D. sys_abc – Incorrect
"sys_" is reserved forsystem tables(e.g.,sys_user,sys_db_object).
Explanation of Incorrect Options:
ServiceNow Docs: Creating Custom Tables
ServiceNow CSA Study Guide – Table Administration
ServiceNow Product Documentation: Understanding Table Naming Conventions
References from Certified System Administrator (CSA) Documentation:
