1 ) MySQL

• MySQL is a relational database management system.
• MySQL is Open Source Software
• Anybody can download MySQL from the Internet and use it without paying anything.

2)MySQL on Windows (For Greenhorns )

• Download MySQL for Windows from here
• How to install and run MySQL on Window2000/ NT/ 95/98
• Download the JDBC Driver for MySQL

3)Operating System Supported By MySQL

• AIX 4.x with native threads
• BSDI 2.x with the included MIT-pthreads package
• BSDI 3.0, 3.1 and 4.x with native threads
• DEC UNIX 4.x with native threads
• FreeBSD 2.x with the included MIT-pthreads package
• FreeBSD 3.x with native threads
• HP-UX 10.20 with the included MIT-pthreads package
• HP-UX 11.x with the native threads
• Linux 2.0+ with LinuxThreads 0.7.1 or glibc 2.0.7
• MacOS X Server
• NetBSD 1.3/1.4 Intel and NetBSD 1.3 Alpha (Requires GNU make)
• OpenBSD > 2.5 with native therads. OpenBSD < 2.5 with the included MIT-pthreads package
• OS/2 Warp 3, FixPack 29 and OS/2 Warp 4, FixPack 4
• SGI Irix 6.x with native threads
• Solaris 2.5 and above with native threads on SPARC and x86
• SunOS 4.x with the included MIT-pthreads package
• SCO OpenServer with a recent port of the FSU Pthreads package
• SCO UnixWare 7.0.1
• Tru64 Unix
• Win95, Win98, NT and Win2000.

1)InstantDB
 
InstantDB is a 100% Java,™ Relational Database Management System (RDBMS). Features supported include joins, transactions, triggers, sub-selects, table aliasing and much, much more that you wouldn't normally expect to find in a free RDBMS.
Download InstantDB.

2)Operating System Supported By InstantDB

• NT/95
• Linux
• Solaris
• AIX
• OS2
• MacOS
• SVR4
• EPOC32

1)DbVisualizer
 
DbVisualizer is a cross platform database visualization tool relying 100% on the JDBC.
It can connect to many databases simultaneously.
Very user friendly , Rich user interface.
Connects to any Database(Oracle , SQLServer , Sybase , MySQL, InstantDB .... ) provided you have the appropriate JDBC Drivers.
And moreover it is free .

1)JDBC drivers for your Database
 
Looking for JDBC drivers for your database Just choose the database and the type of driver and search .

2)JDBC Driver Types
 
Type 1:
     JDBC-ODBC bridge
Type 2:
     Native-API partly Java
Type 3:
     Net-protocol fully Java
Type 4:
     Native-protocol fully Java
For more information on types of JDBC drivers.