Most importantly it serves as the association between the tables (at least for cake) and it can also be used as the primary key, guaranteeing that each record has a unique identifier.

On 7/17/06, bingo <[EMAIL PROTECTED]> wrote:

hi,

I thought so. But to me it seems a memory wastage and I don't see any
scenario where I can use it. It will be unncessary wastage of storage
memeory as well as it will increase data indexing length.

Regards



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