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Applying and Extending Oracle Spatial by Siva Ravada, Simon Gerard Greener

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Workspace Manager

Spatial applications often have the need to work with multiple versions of the data, for example, a city planning application might provide design choices for adding new sub-divisions to the city. At the same time, a reviewer should be able to look at all the possible designs and choose the best design. This requires access to multiple versions of the data. Some of the common reasons for multiversioning of data are concurrency (multiple users working on different designs), history, and what-if scenario creation. The concurrency here is different from the concurrency provided by the database. Another requirement is to keep the changes available beyond the lifetime of the database transaction, especially for what-if scenarios, ...

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