Next, we show a very useful trick to add large volumes of new data to an existing partitioned table already indexed. We want to add this data in such a way as to avoid disruption to queries against the table, and at the same time, reduce the cost of index maintenance on the partitioned table. There are two cases we can consider. In the first case, the new data that is coming in does not have to be available for queries as soon as the data is acquired. This can be supported with a staging table to collect the incoming data. In the second case, the incoming data should be available for queries as soon as the data is acquired. In this case, we cannot use a staging table and the data has to be directly inserted into the base table.
Applying and Extending Oracle Spatial
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Applying and Extending Oracle Spatial
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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
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Defining a Data Model for Spatial Data Storage
Importing and Exporting Spatial Data
Using Database Features in Spatial Applications
Replicating Geometries
Partitioning of Data Using Spatial Keys
Implementing New Functions
Editing, Transforming, and Constructing Geometries
Using and Imitating Linear Referencing Functions
Raster Analysis with GeoRaster
Integrating Java Technologies with Oracle Spatial
SQL/MM – A Basis for Cross-platform, Inter-operable, and Reusable SQL
Table Comparing Simple Feature Access/SQL and SQL/MM–Spatial
Use of TREAT and IS OF TYPE with ST_GEOMETRY
Index
Customer Reviews