… for an object-oriented database model. Up to now, systems including a metaclass concept …
giving unrestricted access to manipulate metaclasses which can result in inconsistent states of …

… In the following we will introduce several kinds of mappings from relational to objectoriented
databases. We start with the straightforward one already indicated in the previous section by …

… For example, to create a new class called person which is an instance of the metaclass
entitymetaclass, the call shown in figure 3 is made: The argument of new is a PROLOG list, the …

… In our approach metaclasses lead to an open and tailorable data model. To our knowledge
… other object-oriented database management system which includes a metaclass concept …

… for implementation of database’s schema repository. However in object-oriented DBMS these
… This work is intended to show the importance of providing an explicit database metamodel …

… and describes the fundamental concepts of the objectoriented data model as far as these
concepts are relevant for the introduction and definition of the metaclass concept. First, we …

… In Chapter 6 we investigate how object classes of multiple object-oriented databases can
be integrated to a global view [SL90, BLN86]. In particular we show how the principle of object …

… The method new of "Metaclass" creates an instance of type Metaclass and calls the
method init to initialize this instance. This method triggers the method add_class of the R-meta-class" …

… of object-oriented databases. We describe a general framework based on an object-oriented …
, by inserting a new object into one of the meta-classes ObjectTypes, Functions, Class-Defs …

… Object-oriented database systems are the focus of current research and development efforts…
most features found in current object oriented database systems. The framework contains …