Now showing items 1-3 of 3

    • Incremental materialization of object-oriented views 

      Alhajj, R.; Elnagar, A. (Elsevier, 1999)
      We present an approach to handle incremental materialization of object-oriented views. Queries that define views are implemented as methods that are invoked to compute corresponding views. To avoid computation from scratch ...
    • Query model for object-oriented databases 

      Alhajj, Reda; Arkun, M. Erol (IEEE, 1993-04)
      A query language should be a part of any database system. While the relational model has a well defined underlying query model, the object-oriented database systems have been criticized for not having such a query model. ...
    • Reusability and schema evolution in object - oriented query models 

      Polat, F.; Alhajj, R. (ASME, New York, NY, United States, 1996)
      In this paper, we have benefited from having an object algebra maintaining closure that makes it possible to have the output from a query persistent in the hierarchy. Based on this, it is possible to maximize reusability ...