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Schema architectures and their relationship to transaction processing in distributed database systems
1991
Information Sciences
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The conceptual and external schema descriptions may use different data models (e.g. relational, network, or semantic data models). ...
In addition to the three schemas represented by boxes in Figure 1 , the ANSI,/SPARC architecture also contains a number of mappings, represented by edges in the diagram. ...
used in [12] in order similarly to reduce the cost of processing queries in multidatabase systems using aggregate functions for overlapping data values. ...
doi:10.1016/0020-0255(91)90044-u
fatcat:cm5ht3htazhjlcdxwhhllwbtny