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Introduction to SQL



What is SQL?


What Can SQL do?

Using SQL in Your Web Site

To build a web site that shows data from a database, you will need:

RDBMS

RDBMS stands for Relational Database Management System.

RDBMS is the basis for SQL, and for all modern database systems such as MS SQL Server, IBM DB2, Oracle, MySQL, and Microsoft Access.

The data in RDBMS is stored in database objects called tables. A table is a collection of related data entries and it consists of columns and rows.

Look at the "Customers" table:

Example

SELECT * FROM Customers;








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