Semantic and object-oriented database support for software environments

In the database community there is considerable disagreement concerning the definition of `object-oriented´. The author distinguishes between two very different ways in which this term is used in the database world, and argues that together, these two sorts of object-orientedness form a solid framework for supporting software engineering. Essentially, when database researchers use the word `object-oriented´, they are generally referring to one of two approaches-structural object-orientation or behavioral object-orientation. The former is usually called semantic modeling, after a class of data models that attempt to provide richer constructs for representing the semantics of database applications. The second class of data models is geared toward the behavior of objects and is concerned with the manipulation of data, taking an abstract data type approach of embedding operations (methods) within types