10. The machine-readable storage medium as recited in claim 8 , further comprising the step of inserting a first row into a table that includes said second column; and wherein said first row contains user-defined metadata which conforms to said user-specified XML schema.
11. The machine-readable storage medium as recited in claim 10 , wherein said inserting of said first row further comprises the step of storing a reference in said first row referring to a row that contains the resource that is specifically described by user-defined meta-data stored in said first row.