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SQL Tutorial SQL is a standard language for storing, manipulating and retrieving data in databases.

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Python Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

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We recommend reading this tutorial, in the sequence listed in the left menu. Java is an object oriented language and some concepts may be new. Take breaks when needed, and go over the examples as …

We recommend reading this tutorial, in the sequence listed in the left menu. C++ is an object oriented language and some concepts may be new. Take breaks when needed, and go over the examples as …

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