What kind of database is used in Plone / Zope Content Management System?
Plone / Zope Content Management System utilizes the integrated transactional database ZODB, supplied by Zope. It is possible to connect to other databases like Oracle, MS-SQL, or Tamino through a variety of different interfaces. It is further possible to export the whole or parts of the database and import it into other Plone / Zope sites. XML and a compressed data format are available for this import/export functionality. This feature allows Plone / Zope Content Management System to store backups locally on your computer, as well as making backups over the Internet via HTTP or HTTPS.