You can delete a table from a project if you added too many tables or some tables are not necessary after a period of time.
You can directly delete an orphan table that is not related to another tables and does not contain any assignments. If you delete a table that is a part of profile results, a warning appears and TDM deletes the table from the profile results as well.
You can delete a table that is a part of an entity, a group, or a plan. If the table is part of an entity, a group, a masking plan, or a generation plan, the
Impacted Objects
dialog box appears with the list of affected objects. If the table is part of a template and if the template is part of a plan, the affected objects list does not contain the template and the plan.
You can delete one table at a time. You cannot delete XML files from Test Data Manager after you import metadata from XSD sources.