Database Objects Used for WCS

Several tables and other database objects are used to implement WCS operations.

In a WCS schema:

• Table SDO_WCS_COVERAGE contains metadata for all published coverages. The metadata includes coverage ID, raster ID, and raster data table. Each row corresponds to a coverage.

• Sequence SDO_WCS_COVERAGE_ID_SEQ is used to generate a unique coverage ID value.

In a user schema:

• Table WCS_TEMP_TABLE is used as a temporary storage for GeoRaster objects when reprojection or transformation is involved when processing a GetCoverage Operation (WCS) request. GeoRaster objects are kept in this table until the response is sent, after which the objects are deleted from the table.

• Table WCS_TEMP_RDT is the raster data table for GeoRaster objects in the WCS_TEMP_TABLE table.