1. Introduction

Meta-Data Database Access (or MDDA for short) is a name which I gave to a methodology that facilitates the maintaince of code that interacts with databases.
With MDDA, one enumerates the fields inside the database with an array of Perl 5 data-structures that describes them.
That way adding or modifying the fields of a table will many times involve only one or two modification to the code, instead of completely going all over it.