DocumentCode
316959
Title
On complex type hierarchy
Author
Miura, Takao ; Shioya, Isamu
Author_Institution
Sanno Coll., Kanagawa, Japan
fYear
1997
fDate
35738
Firstpage
156
Lastpage
164
Abstract
Discusses the theoretical foundation for type hierarchy of complex objects to extend modelling concepts, semantics and constraints. Complex objects consist of entities and data-structure instances. We assume general constructions of data structures, i.e. not only sets and tuples but any structuring operators are allowed. Our discussion uses an instance-based data model. Since there may be infinite complex type information to each instance, we explore a simplified description in such a way that type schemes contain only least-general types. The heart of our approach exists in the semantic orders of complex objects
Keywords
abstract data types; data structures; database theory; object-oriented databases; type theory; complex objects; complex type hierarchy; constraints; data-structure instances; entities; instance-based data model; least-general types; modelling concepts; semantics; sets; structuring operators; tuples; type schemes; Data models; Data structures; Databases; Heart; Instruction sets; Object oriented modeling; Solid modeling;
fLanguage
English
Publisher
ieee
Conference_Titel
Knowledge and Data Engineering Exchange Workshop, 1997. Proceedings
Conference_Location
Newport Beach, CA
Print_ISBN
0-8186-8230-2
Type
conf
DOI
10.1109/KDEX.1997.629861
Filename
629861
Link To Document