Hi there and welcome to perlmonks.
Likely what you're being asked to do is to transfer data that is formatted as comma separated values inside of a text file into another type of data store known as a Berkeley database. Putting the data into such a database lets you query and change the data with the features provided by that database system.
You could find a module on CPAN such as Text::CSV that will help you read in CSV data from a text file. There are other modules such as BerkeleyDB that give you a way to write that data into a Berkeley database.
You can always ask back here with specific questions if you get stuck on something.
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