Summary
We began this chapter with a discussion on the origins of SQL. You learned that SQL is a relational database language that was created soon after the introduction of the relational model. We also explained that the early evolution of SQL was closely tied to the evolution of the relational model itself.
Next, we discussed the initial implementations of the relational model by various database vendors. You learned that the first relational databases were implemented on mainframe computers. You also learned how IBM and Oracle came to be big players in the database industry.
We then discussed the origin of the ANSI SQL Standard. You learned that there was an unofficial standard before ANSI decided to define an official one, and we discussed ...
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