Multidimensional Semistructured Data: Representing Context-Dependent Information on the Web
Yannis Stavrakas,Manolis Gergatsoulis +1 more
- 27 May 2002
- pp 183-199
TL;DR: This paper discusses the properties of MOEM and defines a transformation that reduces MOEM to a conventional OEM holding under that world, and shows how MOEM can be used to represent changes over time in an OEM database.
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Abstract: In this paper, we address a problem common in the frame of WWW, namely, representing information that assumes different facets under different contexts (sets of worlds). For expressing context-dependent (or multidimensional) data, we introduce Multidimensional Semistructured Data, where context is defined through (dimension, value) pairs. An extension of OEM called Multidimensional Object Exchange Model (MOEM) is introduced, for representing multidimensional data. We discuss the properties of MOEM and define a transformation that, for any given world, reduces MOEM to a conventional OEM holding under that world. As a case study, we show how MOEM can be used to represent changes over time in an OEM database.
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An Annotated Bibliography on Temporal and Evolution Aspects in the World Wide Web
Fabio Grandi
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References
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Serge Abiteboul,Peter Buneman,Dan Suciu +2 more
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TL;DR: A Syntax for Data: Typing semistructured data and the Lore system and database products supporting XML are explained.
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Sudarshan S. Chawathe,Hector Garcia-Molina,Joachim Hammer,Kelly Ireland,Yannis Papakonstantinou,Jeffrey D. Ullman,Jennifer Widom +6 more
- 13 Oct 1994
TL;DR: The Tsimmis project as mentioned in this paper is a joint project between Stanford and IBM Almaden Research Center to develop tools that facilitate the rapid integration of heterogeneous information sources that may include both structured and unstructured data.
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Jeffrey D. Ullman
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