NotesFAQContact Us
Collection
Advanced
Search Tips
Showing all 6 results Save | Export
Specification and Enforcement of Semantic Integrity Constraints in Microsoft Access
Peer reviewed Peer reviewed
Direct linkDirect link
Dadashzadeh, Mohammad – Journal of Information Systems Education, 2007
Semantic integrity constraints are business-specific rules that limit the permissible values in a database. For example, a university rule dictating that an "incomplete" grade cannot be changed to an A constrains the possible states of the database. To maintain database integrity, business rules should be identified in the course of database…
Descriptors: Semantics, Integrity, Database Management Systems, Database Design
The Subject-Object Relationship Interface Model in Database Management Systems.
Peer reviewed Peer reviewed
Yannakoudakis, Emmanuel J.; Attar-Bashi, Hussain A. – Journal of Documentation, 1989
Describes a model that displays structures necessary to map between the conceptual and external levels in database management systems, using an algorithm that maps the syntactic representations of tuples onto semantic representations. A technique for translating tuples into natural language sentences is introduced, and a system implemented in…
Descriptors: Algorithms, Computational Linguistics, Connected Discourse, Database Management Systems
A Computer-Aided Abstracting Tool Kit.
Peer reviewed Peer reviewed
Craven, Timothy C. – Canadian Journal of Information and Library Science, 1993
Reports on the development of a prototype computerized abstractor's assistant called TEXNET, a text network management system. Features of the system discussed include semantic dependency links; displays of text structure; basic text editing; extracting; weighting methods; and listings of frequent words. (Contains 25 references.) (LRW)
Descriptors: Abstracting, Computer Oriented Programs, Computer Software Development, Database Management Systems
A Text Knowledge Base from the AI Handbook.
Peer reviewed Peer reviewed
Simmons, Robert F. – Information Processing and Management, 1987
Describes a prototype natural language text knowledge system (TKS) that was used to organize 50 pages of a handbook on artificial intelligence as an inferential knowledge base with natural language query and command capabilities. Representation of text, database navigation, query systems, discourse structuring, and future research needs are…
Descriptors: Database Management Systems, Databases, Discourse Analysis, Expert Systems
Natural Language Processing.
Peer reviewed Peer reviewed
Rindflesch, Thomas C. – Annual Review of Applied Linguistics, 1996
Examines recent trends in research in natural language processing and discusses some applications of this research to the solution of information management problems. The article emphasizes that the importance of natural language processing systems is reflected in their frequent use in support of other computer programs. (71 references) (CK)
Descriptors: Computational Linguistics, Database Management Systems, Dictionaries, Discourse Analysis
How Do You Describe a Symbol? The Problems Involved in Retrieving Symbols from a Database.
Peer reviewed Peer reviewed
Dyson, Mary C. – Information Services and Use, 1992
Analyzes attributes of symbols and identifies the need for a suitable management system for retrieving images from a database. A classification structure that incorporates graphic, semantic, and bibliographic dimensions is described; experiments with describing, sorting, and drawing symbols are reviewed; and future work on a database management…
Descriptors: Classification, Database Management Systems, Futures (of Society), Graphic Arts