Relational Database Management Systems(RDBMS) have their roots way back to the early 1970s. A RDBMS is a database management system in which data is stored in the form of tables, and the relationship among the data is also stored in the form of tables.
There are numerous RDBMS. For a comparison, of some of the major RDBMS, please check out Wikipedia
PostgreSQL is a powerful, open source relational database system with over 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. Running on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows, it is fully ACID compliant, has full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages) and includes most SQL92 and SQL99 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP. It also supports storage of binary large objects, including pictures, sounds, or video; and has native programming interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl, ODBC, among others.
Planet PostgreSQL - A site dedicated to PostgreSQL related blogs.
Tech Republic - Articles and discussions on PostgreSQL
InDemand.Net - List of technical links and reources for PostgreSQL
PGSearch - A fast search engine indexing a number of PostgreSQL and PostgreSQL related websites.
PGFoundry - PgFoundry is the PostgreSQL Development Group's site for developing and publishing PostgreSQL-related software.
dBForums - Forums, articles, discussions on PostgreSQL
Tek-Tips.com - Forums on PostgreSQL
MySQL is the world's most popular open source database software, with over 100 million copies of its software downloaded or distributed throughout its history. Due to its speed, reliability, and ease of use, MySQL has become the preferred choice for Web, Web 2.0, SaaS, Telecom companies etc as it eliminates the major problems associated with downtime, maintenance and administration for modern, online applications. MySQL is a key part of LAMP (Linux, Apache, MySQL, PHP / Perl / Python), the fast-growing open source enterprise software stack.
MYSQL.com - Technical resources, articles, and discussion forums on MYSQL
Sun Microsystems - Resources for systems administrators
DevShed - MYSQL help, tips, tutorials, advice, tools etc
ZDnet - Articles, tools, reources for MYSQL
Programming Talk - MYSQL resources, forums, tools
phpMyAdmin - Free MYSQL database administration tool (written in php)
dBForums - Forums, articles, discussions on MYSQL
Firebird is a relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production systems, under a variety of names, since 1981. The Firebird Project is a commercially independent project of C and C++ programmers, technical advisors and supporters developing and enhancing a multi-platform relational database management system based on the source code released by Inprise Corp (now known as Borland Software Corp) on 25 July, 2000.
DevShed - Firebird tips, tutorials, advice, tools etc
Firebird FAQ - Advice on installation, performance tuning, backup etc
Tech Republic - Firebird articles, forums, tools etc
Oracle is a rdbms produced and marketed by Oracle Corporation. Oracle Corp have been at the forefront of rdbms development and have many firsts attributed to them....the first commercially available SQL based database(1979), the first web based database(1997), the first database to support XML (1999) etc.Oracle is a rdbms produced and marketed by Oracle Corporation. Oracle Corp have been at the forefront of rdbms development and have many firsts attributed to them....the first commercially available SQL based database(1979), the first web based database(1997), the first database to support XML (1999) etc.
Oracle Community - Oracle Technology Network, blogs, wikis, discussion forums, user groups.
Oracle Support - Official Oracle support resources
Oracle Magazine
Oracle FAQs - FAQs, message boards, tools etc
dBForums - Forums, articles, discussions on MYSQL
DB2 (DATABASE 2) is a rdbms from IBM that was originally developed for its mainframes. It is a full-featured SQL language DBMS that has become IBM's major database product. Known for its industrial strength reliability, IBM has made DB/2 available for all of its own platforms, including OS/2, OS/400, AIX (RS/6000) and OS/390, as well as for Solaris on Sun systems and HP-UX on HP 9000 workstations and servers.
IBM DB2 Information Centre - help, information, support and documentation
IBM DB2 Wiki - Official IBM Db2 wiki
Customers choose Sybase for the same reasons they choose Linux and Linux applications – lightning-fast performance, lower cost of ownership, and the many benefits of open technology. Sybase was first to deliver an enterprise-class DBMS on Linux in 1999 and today, Sybase provides the most comprehensive combination of products and services supporting Linux in the industry
International Sybase User Group - Technical resources for Sybase database administrators and developers
Rocket 99 - Technical guide to sybase development and administration
Peppler.org - Sybase Resources
SQL Server is a RDBMS from Microsoft that's designed for the enterprise environment. SQL Server runs on T-SQL (Transact -SQL), a set of programming extensions from Sybase and Microsoft that add several features to standard SQL, including
Microsoft Developer Network - Official Microsoft resources, tools, forums for SQL Server
SQL Server Central - Articles, forums, advice for SQL Server
SQL Server Performance.com - Articles, forums, tips, blogs etc for SQL Server
Experts Exchange - Find solutions to your SQL Server based problems(paid service)
SQL Hunt - SQL Server resources search engine
SQL Team.com - Articles, blogs, forums etc
SQL Server Worldwide Users Group (SSWUG.com) -Largest independent SQL Server help resource on the 'net'.
Apache DB
Normalisation
If you would like to recommend any RDBMS resources (websites/newsgroups,user groups etc) please email your suggestions to info@itmob.co.uk