Sarathy V.M., Gucht D.V., and Badia A. Extended query graphs for declarative specification of set oriented queries. ACM SIGMOD, Special Workshop on DBPL?, 1993.  Home/Search   Document Not in Database   Summary   Related Articles

.... query language based on the Query Graphs (QG) of Graph Oriented Object Data Model [GPG90] EQG subsumes QG and introduces extensions to enable natural, declarative expressibility of complex queries involving universal quantification, negation, set comparison or combinations of these [SSG93, SGB93] The main extensions introduced are to augment standard conjunctive query graphs with set object that represent derived sets relevant to the query, and to specify VEnndiagram interactions between the set objects to specify the constraints to be met by the derived sets that the set objects ....

.... main extensions introduced are to augment standard conjunctive query graphs with set object that represent derived sets relevant to the query, and to specify VEnndiagram interactions between the set objects to specify the constraints to be met by the derived sets that the set objects represent [SGB93] The paper also discusses how these extended query graphs can be translated into the Tarski algebra augmented with so called generalized bonding operators. 11.2 Features Available in the Language Universal Quantification With the proper use of Venn diagrams representing set objects, UQ can be ....

[Article contains additional citation context not shown here]

Sarathy V.M., Gucht D.V., and Badia A. Extended query graphs for declarative specification of set oriented queries. ACM SIGMOD, Special Workshop on DBPL?, 1993.

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC