Predactor was an academic object-relational DBMS developed at Cornell University during the 2000s. It used the [Shore](/db/shore) storage manger from the University of Wisconsin.
The last release of the system was in 2002.
Object-Relational
Disk-oriented
N-ary Storage Model (Row/Record)
http://www.cs.cornell.edu/info/projects/predator/predator.html
http://www.cs.cornell.edu/info/projects/predator/designdoc.html
Cornell University
US
1996
2002
Academic, Open Source
Shore
Linux, Windows
GPL v2