24 Jan
2011
24 Jan
'11
3:14 p.m.
Then I don't need primary key ?
(Read up on what primary keys really do.)
If I choose my primary key to be an integer then I have to keep track of numbers and automatically insert number incremented by one ?
No, Postgres supports automatically assigned IDs as well, but you have to specify them. Look into the serial datatype, and default column values.