You created your tables with double quotes, and now the names are case sensitive.

As documented in the manual "Approvals" and Approvals are two different names.

Now that you created the table names in a case sensitive manner, you have to use those dreaded double quotes always.

select * 
from "Approvals";

As a general advice: never use double quotes in SQL.

You created your tables with double quotes, and now the names are case sensitive.

As documented in the manual "Approvals" and Approvals are two different names.

Now that you created the table names in a case sensitive manner, you have to use those dreaded double quotes always.

select * 
from "Approvals";

As a general advice: never use double quotes in SQL.