Rule of thumb for new schema vs. new database?

Hi Again,

I have a meeting tomorrow with one of our project managers who is going to request a new schema or database. He wants my advice on which is best for his needs. Now...as I've said before I'm a neophyte DBA and do know the difference between a schema and a new database. I'm inclined to suggest just a new schema, but now I'm wondering to myself what kind of 'rule of thumb' is there is for this kind of decision.

When would it be preferable to create a new db vs. just a schema in an existing db?

Thanks for you help.

Brian Peasey

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