Low-level database connection and access functionality.
You should usually not access the OpenCms database directly.
To access the OpenCms VFS repository, obtain a {@link org.opencms.file.CmsObject}
which will encapsulate the current users permissions.
Definitions of all required backup driver methods.
A backup driver is a driver to write projects, resources and properties of
resources optionally to a second set of backup database tables while resources
get published.
Definitions of all required history driver methods.
A history driver is a driver to write projects, resources and properties of
resources optionally to a second set of history database tables while resources
get published.