Advances in Information Systems

  title={Advances in Information Systems},
  author={Jan van Leeuwen and Tatyana M. Yakhno},
  booktitle={Lecture Notes in Computer Science},
Aggregation is an important concept in database design where composite objects can be modelled during the design of database applications. Therefore, preserving the aggregation concept in database implementation is essential. In this paper, we propose models for implementation of aggregation in an Object-Relational Database Management System (ORDBMS) through the use of index clusters and nested tables. ORDBMS is a commercial Relational Database Management Systems (RDBMS), like Oracle, which… CONTINUE READING


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