Book Image

Applying and Extending Oracle Spatial

By : Siva Ravada, Simon Greener
Book Image

Applying and Extending Oracle Spatial

By: Siva Ravada, Simon Greener

Overview of this book

Spatial applications should be developed in the same way that users develop other database applications: by starting with an integrated data model in which the SDO_GEOMETRY objects are just another attribute describing entities and by using as many of the database features as possible for managing the data. If a task can be done using a database feature like replication, then it should be done using the standard replication technology instead of inventing a new procedure for replicating spatial data. Sometimes solving a business problem using a PL/SQL function can be more powerful, accessible, and easier to use than trying to use external software. Because Oracle Spatial's offerings are standards compliant, this book shows you how Oracle Spatial technology can be used to build cross-vendor database solutions. Applying and Extending Oracle Spatial shows you the clever things that can be done not just with Oracle Spatial on its own, but in combination with other database technologies. This is a great resource book that will convince you to purchase other Oracle technology books on non-spatial specialist technologies because you will finally see that "spatial is not special: it is a small, fun, and clever part of a much larger whole".
Table of Contents (20 chapters)
Applying and Extending Oracle Spatial
About the Authors
About the Reviewers
Table Comparing Simple Feature Access/SQL and SQL/MM–Spatial


Desktop GIS products provide an amazing range of editing functionality for geometric data, further creating a rich environment for the operator. While nothing in this chapter says that such functionality is not important or unnecessary, the processing of geometric data inside an Oracle database in response to clearly described and defined business processes is an important deployment option that should be available to all architects and developers. To do such deployment requires a rich set of functionality. This chapter extended the functions built in Chapter 6, Implementing New Functions, by creating functions for: editing vertices; transforming, scaling, rotating, and reflecting geometries; tiling, splitting, extending, shortening, moving sideways, and square buffering. Finally, the functions for converting from 2D to 3D, with examples, completed the chapter's presentation of what is possible for geometry editing, transformation, and construction.

The next chapter will continue...