Why are there so many Database Management Systems?

Posted by mr.bio on Stack Overflow See other posts from Stack Overflow or by mr.bio
Published on 2010-05-03T12:43:32Z Indexed on 2010/05/03 14:48 UTC
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database

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language-agnostic

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dbms

Why are there so many Database management systems? I am not an DB expert and I've never thought about using another Database other than mySQL.

Programming languages offer different paradigms, so it makes sense to choose a specific language for your purpose.

Question

What are the factors in choosing a specific Database management system ?

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