Graph data model and its data language
Graph data model and its data language
An object-oriented data model formalised through hypergraphs
Data & Knowledge Engineering
The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
Object Database Standard: ODMG-93
Object Database Standard: ODMG-93
Temporal and Real-Time Databases: A Survey
IEEE Transactions on Knowledge and Data Engineering
A Visual Query Language for Graphical Interaction with Schema-Intensive Databases
IEEE Transactions on Knowledge and Data Engineering
SID: a system for interactive design
AFIPS '80 Proceedings of the May 19-22, 1980, national computer conference
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In this paper we present an approach to manage evolutionary changes that take place over time in an object-oriented software metrics database schema. Our framework is based on Entity-Relation (E-R) model and uses a recursive graph structure, known as R-graph, to support the views of software quality and risk. The fundamental mechanism for abstracting views is the introduction of two semantic operators for the R-graph. These operators are proposed based on graph-based predicates and Petri-net based predicate formalism for view abstraction.