17.4 PL/SQL Subprograms for Using WCS

SDO_WCS procedures and functions enable you to perform operations that include the following actions.

• Initializing a WCS schema.

• Creating temporary tables to store GeoRaster when a reprojection or transformation is needed. (CRS Extension or Scaling Extension.).

• Granting and revoking privileges to WCS schema.

• Publishing coverages

• Dropping (unpublishing) coverages

SDO_WCS.Initcreates the SDO_WCS_COVERAGE table, causing that database schema to become a WCS schema.

SDO_WCS.PublishCoverage has two formats. One format publishes a GeoRaster object as a coverage, stores metadata in SDO_WCS_COVERAGE table, and assigns a unique coverage ID to it. The other format publishes all unpublished GeoRaster objects in a specified column.

SDO_WCS.CreateTempTable should be executed once for each user schema. This procedure creates a GeoRaster table and an RDT table for temporarily storing a GeoRaster object when reprojection or transformation is involved in processing a GetCoverage Operation (WCS) request.