Showing posts with label Learning Sql. Show all posts
Showing posts with label Learning Sql. Show all posts

Saturday, October 20, 2012

SQL

SQL Commands:SQL commands are instructions used to communicate with the database to perform specific task that work with data. SQL commands can be used not only for searching the database but also to perform various other functions like, for example, you can create tables, add data to tables, or modify data, drop the table, set permissions for users. SQL commands are grouped into four major categories depending on their functionality: Data Definition Language (DDL)...