Showing posts with label SQL. Show all posts
Showing posts with label SQL. Show all posts

25 May 2012

Most Popular RDBMS

There are many popular RDBMS available to work with. This tutorial gives a brief overview of few most popular RDBMS. This would help you to compare their basic features:

MySQL    

MySQL is open source SQL database, which is developed by Swedish company MySQL AB. MySQL is pronounced "my ess-que-ell," in contrast with SQL, pronounced "sequel."
MySQL is supporting many different platforms including Microsoft Windows, the major Linux distributions, UNIX, and Mac OS X.
MySQL has free and paid versions, depending on its usage (non-commercial/commercial) and features. MySQL comes with a very fast, multi-threaded, multi-user, and robust SQL database server.

History:

  • Development of MySQL by Michael Widenius & David Axmark beginning in 1994.
  • First internal release on 23 May 1995.
  • Windows version was released on 8 January 1998 for Windows 95 and NT.
  • Version 3.23: beta from June 2000, production release January 2001.
  • Version 4.0: beta from August 2002, production release March 2003 (unions).
  • Version 4.01: beta from August 2003, Jyoti adopts MySQL for database tracking.
  • Version 4.1: beta from June 2004, production release October 2004.
  • Version 5.0: beta from March 2005, production release October 2005.
  • Sun Microsystems acquired MySQL AB on 26 February 2008.
  • Version 5.1: production release 27 November 2008.

SQL Tutorial

 SQL (Structured Query Language) is used to modify and access data or information from a storage area called database. This beginner sql tutorial website teaches you the basics of SQL and how to write SQL queries. I will be sharing my knowledge on SQL and help you learn SQL better. 

SQL Introduction

SQL stands for “Structured Query Language” and can be pronounced as “SQL” or “sequel – (Structured English Query Language)”. It is a query language used for accessing and modifying information in the database. IBM first developed SQL in 1970s. Also it is an ANSI/ISO standard. It has become a Standard Universal Language used by most of the relational database management systems (RDBMS). Some of the RDBMS systems are: Oracle, Microsoft SQL server, Sybase etc. Most of these have provided their own implementation thus enhancing it's feature and making it a powerful tool. Few of the sql commands used in sql programming are SELECT Statement, UPDATE Statement, INSERT INTO Statement, DELETE Statement, WHERE Clause, ORDER BY Clause, GROUP BY Clause, ORDER Clause, Joins, Views, GROUP Functions, Indexes etc.
In a simple manner, SQL is a non-procedural, English-like language that processes data in groups of records rather than one record at a time. Few functions of SQL are:
  • store data
  • modify data
  • retrieve data
  • modify data
  • delete data
  • create tables and other database objects
  • delete data