Evaluation of the Database Language GRQL of a Correspondence Database System
Noriyasu Yokoo, Hideki Ishibashi, Yoshiyuki Nakamichi, Manabu Muta, Yasuhiro Shigematsu · 2008
In this paper, we evaluate the database language GRQL which we had proposed with a view to developing a correspondence database system for semi-structured data, and also introduce a remote execution environment of the Corre- spondence Database System which we had implemented. This remote execution system enables all users to evaluate GRQL. A correspondence database is based on correspondence data model. The correspondence data model makes schema flexible, therefore the data model has good compatibility with the semi-structured data. In the data model, data were represented with the labeled correspondence which consisted of the set of triple (a label, an initial vertex, and a terminal vertex), and data was operated with the correspondence algebra which was designed as the data manipulation language.