Article: What Makes A Database Relational?
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What Makes A Database Relational?
There is a calumny being spread across the Internet. It is so deeply entrenched that many intelligent people think they understand it. It makes perfect sense. It is logical. It is understandable. But it is wrong, wrong, wrong.
Let me explain...
Back in the 1960's computers were big, noisy and very, very expensive. Information was kept in more-or-less random places and accessed by programs which were hand-coded to fetch & send the data to the right place. It was a little like writing the names of all your friends together with their phone numbers randomly on a piece of paper. How do you know which phone number belongs to which friend? Back in those early days, programmers had to know whcih item belonged with which when they wrote the programs to get the data ou...
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