When you create a Microsoft Access table, Access will automatically create a primary key to your database table. Still, you can also specify the field you want as the primary key for your database ...

-- Primary key -- Constraint -- parimary key constraint -- (value can not be null and cannot repeat) -- there can be only one primary key in a table drop table snapdeal_orders; create table ...

I'm working on a web app, and it part of it, there is a very simple database-driven file/document manager. As a file manager, there is the possibility of sub-folders. So in the DB, I have the ...