SQuirrel SQL Client can view the structure of a JDBC compliant database, a graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc. You need to be running at least version 1.5 of Java for SQuirreL version 2.4 and higher. See the Old Versions page for SQuirreL downloads that will work with older versions of Java.

It is free software, and you are welcome to redistribute it under the terms of the GNU Lesser General Public License.

To specify the location of your JDBC drivers take the View Drivers from the Windows menu and select (or create) the driver that you will be using. To connect to a database take View Aliases from the Windows menu and create yourself a new alias.

To change application level settings take the Global Preferences option from the File menu. To change options for new sessions (database connections) take the New Session Properties option from the File menu. To change settings for your current session (once you have connected to an alias) take Session Properties from the Sessions menu.

Command Line Options
The behavior of SQuirreL can be changed by passing various arguments to it.
squirrel-sql.sh [options]
or
squirrel-sql.bat [options]

Options:
-userdir,--user-settings-dir <userdir> User settings directory
-l,--log-config-file <config-file> Logging configuration file
-home,--squirrel-home <home> SQuirreL home directory
-n,--native-laf Use native look and feel
-nop,--no-plugins Don't load plugins
-nos,--no-splash Don't display splash screen
-m,--use-default-metal-theme Use default metal theme
-h,--help Display Help and exit
-userdir specifies where SQuirreL stores its per-user settings such as application preferences etc. This defaults to <home>/squirrel-sql.
-home specifies the directory that SQuirreL was installed into. It is setup during the installation process. You should never need to change this argument.

How to Connect to a Database
There are two pieces of information you need to supply to connect to a database; the driver definition and the alias. The driver definition specifies the JDBC driver to use and the alias specifies the connection parameters.
The Driver

The license of this software is Free, you can free download and free use this database management software.