In ServiceNow, tables can extend other tables, inheriting all fields and functionalities from the parent table. These inherited fields are integral to the structure and behavior of the child table.
A. No, inherited fields cannot be deleted from a child table: This is correct. Inherited fields are part of the child table's schema due to its extension of the parent table. Removing these fields would disrupt the inherent structure and relationships defined by the table hierarchy.
B. Yes, but only if they are text fields: This is incorrect. The data type of the field does not permit the deletion of inherited fields.
C. Yes, select the red X in the left-most column in the table definition: This is incorrect. Inherited fields do not have a delete (red X) option in the table definition, as they are not directly created on the child table.
D. Yes, but only if there has never been any saved field data: This is incorrect. The presence or absence of data does not affect the ability to delete inherited fields.
To modify the structure of inherited fields, consider the following approaches:
Field Visibility: Use client scripts or UI policies to hide the inherited fields on forms where they are not needed. This approach maintains data integrity while tailoring the user interface to specific requirements.
Form Layout Configuration: Adjust the form layout to remove inherited fields from specific views, ensuring they are not displayed to users in contexts where they are irrelevant.
These methods allow customization of the user experience without altering the underlying table schema or violating the inheritance principles established in the data model.
