When you delete a table, you permanently remove the table and its contents.
Important: You can't recover the data in a table once it has been deleted. To remove a table from an app without deleting it, move it to a new app, instead.
Before you delete a table
Before you delete a table, you may want to create a new, comprehensive report to review its contents to make sure you don't delete valuable information.
To display a comprehensive report:
Open a table, Select Settings, then Select
above Reports & charts. The report builder opens.Make no changes to the settings, then Select Display.
Important: If the table is related to other tables, delete all relationships before you delete the table. If you don't delete all relationships, you can leave orphaned lookup and reference fields behind in the remaining tables. If you have any formula fields that refer to the relationship's lookup fields, they won't work after you delete the relationship.
Delete tables
You can delete tables using either table settings or Visual Builder.
Use app settings to delete tables
From the app home page, Select Settings, then Select Tables.
Locate the table you want to delete, then select the checkbox to its left.
Select the delete icon (
) in the rightmost column of the table.In the dialog that displays, type YES to confirm the deletion, then Select Delete.
Use Visual Builder to delete tables
Open a table, Select Settings, then Select Structure. Visual Builder opens with the table expanded.
Use the table properties on the right to select the Delete icon:

In the dialog that displays, type YES to confirm the deletion, then Select Delete.