First off, you can use plain text files like SQL databases; take a look at the DBD::CSV module for more details.

Second, it would be helpful to have more information about your problem. What precisely do you mean by "catalog"? Are you inputting these manually, or importing from another system? Just how much information do you need to track? A more detailed problem description would be helpful.

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DamnDirtyApe

Those who know that they are profound strive for clarity. Those who
would like to seem profound to the crowd strive for obscurity.
            --Friedrich Nietzsche