Khan Academy: More Efficient Sql With Query Planning and Optimization

Students will learn how to use SQL, a useful resource for connecting relational databases, in this interactive course! This video lesson from Khan Academy is intended for students who are taking an introductory computer science course.

SQL is useful for creating and querying relational databases. Learn how to use SQL with this interactive course! [2:04]

Take a look at real-world applications of data querying, and for what purpose.

Learn how to make your SQL safe for use by many users.

Learn how to improve the efficiency of recursive algorithms.

Learn how to pair Khan Academy's course mastery system with assignments in order to best meet the needs of all students.

Khan Academy has teamed up with College Board, the makers of the SAT, to create free, official SAT practice for all students. Get personalized practice recommendations based on your performance on the PSAT/NMSQT, check out helpful video...

Jessica explains more important things you should know about using variables. [3:33]

This video [1:03:23] is a conversation with Eric Schmidt and Jonathan Rosenberg, co-authors of the book "How Goggle Works."

Find out why computer programmers use jQuery to do form validation.