The SDO_GEOM package contains the geometry functions.

These can be grouped into the following categories (with examples of each):

• Relationship (True/False) between two objects: RELATE, WITHIN_DISTANCE

• Validation: VALIDATE_GEOMETRY_WITH_CONTEXT, VALIDATE_LAYER_WITH_CONTEXT

• Single-object operations: SDO_ARC_DENSIFY, SDO_AREA, SDO_BUFFER, SDO_CENTROID, SDO_CONVEXHULL, SDO_LENGTH, SDO_MBR, SDO_POINTONSURFACE

• Two-object operations: SDO_DISTANCE, SDO_DIFFERENCE, SDO_INTERSECTION, SDO_UNION, SDO_XOR

For a complete description of this package within the context of Oracle Spatial, see SDO_GEOM in the Oracle Spatial and Graph Developer's Guide.