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SQL Articles

This page features blog posts about SQL. Can’t find what you’re looking for? Let your favorite tutor know that the WyzAnt community could benefit from a blog post about SQL!
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The One Skill Every American Needs to Learn

Encourage your high school students to learn computer science. The link below explains you why?

http://finance.yahoo.com

Tutoring trends...

For the past few years, I've spent most of my time teaching and tutoring on physics, but I also tutor students in programming languages such as C, C++ and Java. These languages are three of the most difficult to learn due in large part to their comprehensiveness. These and languages very similar to them are the programming languages used to implement most of the highest performing and functionally complicated applications in the world, including operating systems, office suites, high performing websites and smartphone apps.

Prior to becoming a teacher, I put myself through graduate school...

Working With DDL and DML

1.     Overview: Working with what?!

SQL  statements are divided into two languages: DDL and DML. We will review the code contained in these languages and apply it to some database tables.

2.     Review of Relational Databases

Relational databases developed in 1970 by Dr. E.F. Codd. This type of database eliminated some of the problems that were associated with standard files and other database designs. 

Why do we need Relational Databases?

Many companies often start off collecting data by use of a spreadsheet like the one...

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