Autodesk 15607-010000-5000A Manuale Utente

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Chapter 4

Enhanced Layer Functionality

Note  Using parameters when applying a geometry function is optional. 

The following is a list of some of the supported geometry functions that are 
available with Oracle:

■

SDO_ARC_DENSIFY

■

SDO_BUFFER

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SDO_CENTROID

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SDO_CONVEXHULL

■

SDO_MBR

Note  Consult your Oracle documentation for a complete list of Oracle functions 
available in Oracle and for instructions on how to use them.

In this example, Oracle is creating a buffer around land parcels. It is simply 
one of several ways that you can use geometry functions to analyze and 
manipulate data without changing the original data in the database. 

In the following sample, the parameter %GEOMCOL is used to substitute the 
geometry column name for the parameter. This parameter is optional, and 
you can use it to specify a geometry function without having to write a 
specific geometry column in the request.