Moa and the multi-model architecture: a new perspective on NF2

Maurice van Keulen, V. Marik (Editor), J. Vonk, W. Retschitzegger (Editor), A.P. de Vries, O. Stepankova (Editor), Jan Flokstra, H.E. Blok

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Advanced non-traditional application domains such as geographic information systems and digital library systems demand advanced data management support. In an effort to cope with this demand, we present the concept of a novel multi-model DBMS architecture which provides evaluation of queries on complexly structured data without sacrificing efficiency. A vital role in this architecture is played by the Moa language featuring a nested relational data model based on XNF2, in which we placed renewed interest. Furthermore, extensibility in Moa avoids optimization obstacles due to black-box treatment of ADTs. The combination of a mapping of queries on complexly structured data to an efficient physical algebra expression via a nested relational algebra, extensibility open to optimization, and the consequently better integration of domain-specific algorithms, makes that the Moa system can efficiently and effectively handle complex queries from non-traditional application domains.
Original languageUndefined
Number of pages10
Publication statusPublished - Sep 2003
Event14th International Conference on Database and Expert Systems Applications, DEXA 2003 - Prague, Czech Republic
Duration: 1 Sep 20035 Sep 2003
Conference number: 14


Conference14th International Conference on Database and Expert Systems Applications, DEXA 2003
Abbreviated titleDEXA
Country/TerritoryCzech Republic


  • EWI-7270
  • IR-66449

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