Introduction

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Introduction

This SQL Guide is written as a basic introduction to Structured Query Language (SQL).

RDBMS and SQL :

Structured Query Language (SQL) is a standard language for communication with a relational database management system (RDBMS). SQL provides commands which are used to create, modify, and access the database. Databases contain one or more tables of data with relationships between multiple tables defined in the database. Each table is an object.

SQL Commands :

Select - Used to retrieve selected data. Example:

select "columnname1", "columnname2" from "tablebasename" [where "condition"];

A "*" may be used to select all columns. The where clause is optional and only one column name must be specified.

Insert

Update

Delete

Create

Drop

موضوع: رد: Introduction الأحد نوفمبر 30, 2008 1:07 am

The subject deserves all the thanks and appreciation

Introduction 85459710

موضوع: رد: Introduction السبت سبتمبر 19, 2009 7:12 pm

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