This view gives you information about the size and location of the Zope database. The Zope database stores all Zope objects.
You can reduce the size of your Zope database by packing it. Packing removes old revisions of objects, thus freeing up space but also limiting your ability to undo object changes.
You can control which old revisions of objects are removed from the database by specifying how many days old the revisions must be to be removed. If you specify 0 days old, then all old object revisions will be removed.