>Hi all:
>I am using php4.0.3pl1 with MySQL 3.22.32 on Apache for RH Linux.
>
>I have a table/relation of sports, where amongst other categories, are
>teams, where there can be many 'teamNames' & 'teamInfos' for one sport.
>
>The problem here is that without the use of a composite key:
>'sportName' & 'TeamName', there can be no method of uniquely
>identifiying a row or tuple. A smuch of the info for each sport is
>repeated.
>
>Does MySQL support the use of composite keys? I am using phpMyAdmin
>2.1.0 to adminster my MySQL system, and this only seems to accept a
>single primary key for a single table.
>
>Any advice or other methods I could possibley employ, are most welcome.
>
>Regards:
>Russ
Yes sir, you can declare multi-column primary keys. After the column
definitions, type
PRIMARY KEY (<column list>)
This is covered in the online manual.
If you want to use an auto_increment field as the primary key, you
can insure uniqueness in the SportName and TeamName fields by
declaring a UNIQUE INDEX in the same way.
Bob Hall
Know thyself? Absurd direction!
Bubbles bear no introspection. -Khushhal Khan Khatak
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