Evaluating object-oriented query languages | Zendy

Derwin King Chung Chan | Zendy

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Evaluating object-oriented query languages

Author(s) -

Derwin King Chung Chan

Publication year - 1994

Publication title -

the computer journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.319

H-Index - 64

eISSN - 1460-2067

pISSN - 0010-4620

DOI - 10.1093/comjnl/37.10.858

Subject(s) - computer science , query language , object query language , query optimization , rdf query language , sargable , web query classification , query expansion , object (grammar) , programming language , usability , web search query , frame (networking) , expressive power , dimension (graph theory) , information retrieval , artificial intelligence , search engine , human–computer interaction , mathematics , telecommunications , pure mathematics

Different query languages have been implemented and others proposed for object-oriented database systems. Evaluating and comparing these languages has been difficult due to the lack of a frame of reference. This paper establishes such a framework using four dimensions: support of ob object-orientation, expressive power, support of collections, and usability. Each dimension is defined in terms of a number of criteria. The criteria are, in turn, explained using example queries written in a concise, expressive, and clear query notation: object comprehensions. These same examples also demonstrate the process of evaluating a query language by showing how the criteria can be assessed. An evaluation based on the proposed framework reveals that many well-known query languages do not meet all the criteria. The evaluation framework can also be used constructively in improving existing query languages and directing new query language design

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