Relation decomposition as a method of preserving data privacy in distributed spatial data warehouse

Marcin Gorawski, Szymon Panfil


The article presents an implementation of the relation decomposition as a method of preserving data confidentiality in a new distributed spatial data ware­house architecture that we proposed. Each node in this new architecture has its own privacy preserving module which is able to communicate with other modules. It enables parallel query processing through all privacy preserving modules and as a result it shortens the time of query implementation in DSDW.


data warehouse; privacy preserving; relation decomposition; attribute coding; safety; distributed data

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