Evaluation Expression

A client wants have acess to an online databases records controlled by group strings and evaluation strings e.g., each use would have in his client record a group string like this:

[ROOT][ADMIN][ACCOUNTING][ABC PRODUCTS]

And each record in a database would have an evaluation string like this :

([ROOT] OR [ADMIN] OR [ACCOUNTING] OR [FINANCE]) AND [ABC PRODUCTS] OR
[ACME]) etc.

No limit to the number of groups or the complexity of the boolean expression evaluation algorithm. I need an asp function that I will just pass the group string and the evaluation string and it will return True or False as to whether the client can view that particular record. I can't find anything in ASP on the internet though this must be a common database control method for non-browser applications? Has anyone done anything like this in ASP?