The C Object Processor (COP) was a superset of the C

C (programming language)

C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

 programming language. It was used in the Vbase object-oriented database management system

Object database

An object database is a database management system in which information is represented in the form of objects as used in object-oriented programming...

 developed by Ontologic, Inc. The data model for Vbase was specified by a Type Definition Language (TDL). COP and TDL were influenced by CLU

CLU programming language

CLU is a programming language created at MIT by Barbara Liskov and her students between 1974 and 1975. It was notable for its use of constructors for abstract data types that included the code that operated on them, a key step in the direction of object-oriented programming...

. By 1989, COP and TDL were replaced by C++

C++

C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. It is regarded as an intermediate-level language, as it comprises a combination of both high-level and low-level language features. It was developed by Bjarne Stroustrup starting in 1979 at Bell...

in Ontologic's second generation product, ONTOS. The company was also renamed ONTOS, Inc.