C. Delobel, C. Lécluse, P. Richard: "LOOQ: A Query Language for Object-Oriented Databases, Informal Presentation", Proc. of the ACFET Conference on Knowledge and Object-Oriented Database Systems, pp. 333--352, Paris, France, December 1988.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....into a stable framework for query languages on the structural part of object oriented databases, for overviews see [9] 27] In [43] an architecture closely related to relational architectures is proposed. Implementations that follow these proposals are found in Orion Itasca [5] 32] O2 [4] 14][16], OSCAR [26] and Cocoon [40] Work concentrating on the impact of methods in the framework of object oriented query processing is somehow rare. Some theoretical aspects are covered in [6] An approach suggesting precomputation of methods for indexing is described in [10] A proposal to reveal ....

C. Delobel, C. Lécluse, P. Richard: "LOOQ: A Query Language for Object-Oriented Databases, Informal Presentation", Proc. of the ACFET Conference on Knowledge and Object-Oriented Database Systems, pp. 333--352, Paris, France, December 1988.

....can be found in [KSK92] Appeared in ACM SIGMOD Conference on Management of Data, San Diego, CA, June 1992, pages 393 402 y Work supported in part by the NSF grants IRI 8903507 and CCR 9102159. On sabbatical leave from Stony Brook University. 1 Introduction In recent years, several papers [BANC90, BEEC88, CLUE89, DLR88, KS90, 1] have proposed query languages for object oriented databases. However, none of these languages captures (or even attempts to deal) with all the aspects of the object oriented model. In this paper, we present a new query language that incorporates features not found in earlier languages. The ....

....some of the salient features of a new language for querying object oriented databases. The language is capable of expressing sophisticated queries in a very concise way. This is achieved via extended path expressions, which are more expressive than any of the previous manifestations (for example, [ZAN83, BEEC88, CLUE89, DLR88]) of the dot notation for nested structures. We extended path expressions with the concept of selector, accommodated methods, and higher order variables that range over method names and classes. The use of higher order variables endows our language with truly novel capabilities that allow the ....

Delobel, C., C. L'ecluse, P. Richard, "LOOQ: A Query Language for Object-Oriented Databases, Informal Presentation," Proc. AFCET Conf. on Knowledge and ObjectOriented Database Systems, Paris, Dec. 1988.

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