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

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

HTML 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 …

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Copy Values Tool Example values can be copied from the tutorial and into your spreadsheet, making it easy for you to tag along step-by-step:

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