[Fernado Samuel]

Removed

[MP2]

Are you referring to an auto incrementing primary key?

[Fernado Samuel]

Removed

[RajatPawar]

He means something like the AUTO_INCREMENT primary key which is a unique number assigned to every NEW entry of a row in the table.

[Fernado Samuel]

Removed

[Vince]

1. Ids are used because numerical searches are faster than string searches, and because they are always unique. They also provide a good reference to and from the table when working with relations.
2. Yes. auto_increment fields are a MySQL server feature, not a client feature.
3. No. See above.

[Fernado Samuel]

Removed

[ReneG]

What?

[zT KiNgKoNg]

If you want ID's for each players thats registers on your server just add ID with AI on it, I don't see the point in havings ID's you're better off with registration dates