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GNU Sqltutor is a web based interactive tutorial of Structured Query Language (SQL). You can try Sqltutor online from
First, a tutorial must be selected from the opening page and started. A series of tutorial questions follows in a simple dialog. When finished Sqltutor displays final evaluation with the review of all questions asked during the session together with user’s SQL queries and correct answers for wrong solutions.
Sqltutor is implemented on the top of a relational database system PostgreSQL. The project consists in part of a C++ program of the same name ‘sqltutor’ released under the GNU General Public License (GNU GPL). The ‘sqltutor’ program is a CGI script that selects SQL questions from its database, checks the answers and evaluates the final score. The second part of the project is a free collection of SQL questions and answers representing SQL tutorials. Sqltutor enables to run one or more tutorials in different languages from a single database.
This document was generated by Ales Cepek on May 25, 2014 using texi2html 1.82.