A Cost Model for Path Expressions in Object-Oriented Queries

  title={A Cost Model for Path Expressions in Object-Oriented Queries},
  author={Cetin Ozkan and Asuman Dogac and Mehmet Altinel},
Query processing remains one of the important challenges of Object-Oriented Database Management Systems. Cost based query optimization involves creating alternative executing plans for a given query and executing the least costly one within a cost model framework. In Object-Oriented Database Management Systems (OODBMSs) objects may store references to other objects (precomputed joins), and path expressions are used in query languages. Although the cost fomulas for explicit joins and the… CONTINUE READING


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