Changes

* the '''Core Package''' is a JAR file, which contains the database codesystem, the query processor and the GUI frontend. It is runs completely without additional libraries.

BaseX is platform-independent and runs on any system that provides an implementation of the [http://www.java.com Java] Runtime Environment (JRE)]:* Since <b>Version 9</b> of BaseX, Java 8 is required.* Since <b>Version 8.0</b> of BaseX, Java 7 is mandatory, because it provides better file handling support,required.and because Oracle stopped public support for older * Older versionsare based on Java 6.

If you plan want to perform parallel (concurrent ) read and write operations on a single databaseyour databases, youshould must use the client/server architecutre architecture or deploy it BaseX as web application.You may can safely open the same a database in different JVMs (Java virtual machines) forread-only access, and you won’t will not encounter any problems when reading from or and writingto different databases, but your update operations from different JVMs to the same database will be rejected or may even lead to corrupt databases. For example, if you only read data, you can easily run several clients (standalone, GUI, database clients) at the databasesame time. If you update your data, however, you shouldn’t use the GUI or a standalone instance at the same time. to be written to is currently opened by another virtual machineMore details on concurrency are found in the [[Transaction Management]] article.