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


Spatial data is usually available in many different file formats as many GIS tools use their own proprietary formats for managing this data, so it is very important to understand how to load all these different formats of spatial data into Oracle Spatial. Many ETL tools and data loaders support Oracle Spatial as both input and output format. In this chapter, we looked at different methods for loading the spatial data into Oracle Spatial including simple CSV files to the most common file formats. We also show how to load and generate data in formats that are very common in web mapping applications. This chapter also described issues related to the storage of geometry data in Oracle Spatial. Sometimes it is beneficial to understand the data layout in Oracle Spatial tables, and this was explained with concepts like spatial clustering.

Once the data is loaded into the database, it is now ready for use with applications. Oracle provides many other database features that can be used to...