Archive management system to help you with your work. XArch is an archive management system that allows one to create, populate, and query archives of multiple database versions. XArch is based on a nested merge approach that efficiently stores multiple database versions in a compact archive. The system allows one to create new archives, to merge new versions of data into existing archives, and execute both snapshot and temporal queries using a declarative query language.

1. Make sure that you have Java Runtime Environment (JRE) 6.0 or later installed on your machine.
2. Unzip and extract the content of the XArch binary distribution into a local directory.
3. Run the Command Center from the command line using the following command:
java -jar [-mxXXX] XArchCC.jar [-d] [config-file]
It is suggested to run the Command Center with at least 256MB of Java heap space (i.e., -mx256M). When displaying large query results, 512MB of Java heap space or more is recommended.
The Command Center accepts the following (optional) command line parameter:
-d Activates the debugging mode that will print Java stack traces for exeptions.
config-file An optional config-file setting and maintaining the Command Center properties. If the specified file does not exist it will be created automatically.
4. Make sure that you are connected to an archiver instance.

Requirements:
* Java

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