Hi, guys.
Can anybody explain me for what PRIMARY KEY needed? For example, is
there some pluses using PRIMARY KEY insted of a simple INTEGER column
(when I connect two tables by values of this column in SELECT queries)?
And is PRIMARY KEY auto increment his value when inserting new value in
a table? I mean can I use INTEGER PRIMARY KEY and set him by himself?
And for what a INDEX?
P.S. Sorry for so newbies questions :)
--
Regards,
Igor Mironchick,
Intervale ©
#ICQ 492-597-570
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