ArcSDE supports Oracle Spatial's Object Relational Model as a method to store spatial data. Oracle Spatial extends the Oracle database with the addition of spatial data management functions, spatial metadata schema, indexing methods, and implementation rules. Oracle Spatial provides a spatial geometry type—MDSYS.SDO_GEOMETRY—and a spatial raster type—MDSYS.SDO_GEORASTER.
See Using the Oracle Spatial geometry type for more information on using the geometry type with ArcSDE geodatabases and Using the Oracle Spatial raster type for more information on using the Oracle Spatial GeoRaster type with ArcSDE geodatabases.
For additional information on Oracle Spatial and the storage types it provides, please see the Oracle Spatial User's Guide and Reference for your Oracle release.
