The Zope Object Database provides an object-oriented database for Python that provides a high-degree of transparency. Applications can take advantage of object database features with few, if any, changes to application logic. ZODB includes features such as a pluggable storage interface, rich transaction support, and undo.

The .tgz file is the source tarball. You must have a C compiler to build the software from this file. The .exe files are pre-built Windows installers - you need to get the one specific to the major.minor version of Python you use on Windows.

ZODB3 3.3 requires Python 2.3.4 or later.

• ZODB 3.3.1 is the current release, and is expected to be the last release in the 3.3 line. It does not correspond to any Zope release. Zope 2.8 and Zope3 development have moved on to ZODB 3.4.
• ZODB 3.3 corresponds with the version of ZODB in the ZopeX3-3.0.0c2 release.
• ZODB 3.3c1 corresponds with the version of ZODB in the ZopeX3-3.0.0c1 release.
• ZODB 3.3b2 corresponds with the version of ZODB in the ZopeX3-3.0.0b2 release.
• ZODB 3.3b1 corresponds with the version of ZODB in the ZopeX3-3.0.0b1 release.

ZODB 3.3 supports an early Zope X3 release. Zope 2.8 and current Zope 3 development are using ZODB 3.4. ZODB 3.3 cannot be used with Zope 2.7 or earlier.

ZODB 3.3's ZEO protocol is not wholly compatible, in either direction, with any previous ZEO. See the README file for details.

For more information, see the following resources:

• The ZODB Wiki contains useful information on this package, including getting access to the source code via CVS.

• The README file.

• The NEWS file.