Formal techniques for data base design
Formal techniques for data base design
Non first normal form relations: An algebra allowing data restructuring
Journal of Computer and System Sciences
IFO: a formal semantic database model
ACM Transactions on Database Systems (TODS)
Semantic database modeling: survey, applications, and research issues
ACM Computing Surveys (CSUR)
Cactis: a self-adaptive, concurrent implementation of an object-oriented database management system
ACM Transactions on Database Systems (TODS)
The 3DIS: an extensible object-oriented information management environment
ACM Transactions on Information Systems (TOIS)
The Object-Oriented Functional Data Language
IEEE Transactions on Software Engineering
A database design for graphical models
ACM SIGPLAN Notices
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
Four Views of Complex Objects: A Sophisticate's Introduction
Papers from the Workshop ``Theory and Applications of Nested Relations and Complex Objects' on Nested Relations and Complex Objects
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The paper presents a Construction Database Model used for conceptual level modelling and manipulation of design objects. A primary intention of the CDM model is modelling hierarchically structured objects and generic dependencies between objects in design or in engineering applications. The CDM is an attribute based data model, therefore, all object properties are described by attributes. The leading idea of the CDM model is the representation of various abstractions identified in the semantic database models GSM, IFO, SAM* and FDM with attributes. To distinguish between different abstractions, the notion of attribute role is introduced. Attribute role divides attributes into different categories on the basis of the attribute meaning. Attributes can be of ordinary, structural, derived and implicit role, representing ordinary object properties, hierarchical structure, generic properties and properties defined implicitly with a specific abstraction.Special attention is paid to the representation of generic object properties, which are described by means of a derived attribute or constructor. The constructor enables the description and reevaluation of design object construction process.