Industry association for a common OO data standard. Extracts of ODMG 3.0 as well as some explaining articles are online. Note: Standard is partially superceded by JDO. http://www.odmg.org/
Designs, develops, manufactures, markets, and supports database management systems and object-oriented application development tools for delivering information to desktop platforms. (Nasdaq: IFMX). http://www-3.ibm.com/software/data/informix/
Comparison of state and future prospect of object-oriented and relational databases. [PDF file with IEEE Computer version available from same site.] http://www.leavcom.com/db_08_00.htm
Gives a rough definition of relational, object-oriented and object-relational databases and compares these paradigms using criteria such as simplicity of use, scalability and maturity. http://www.cai.com/products/jasmine/analyst/idc/14821Eat.htm
A collection of links, background, research, requirements, books, newsgroups, and organizations. Includes pointers to the three manifestos. http://www-2.cs.cmu.edu/People/clamen/OODBMS/