code: @Override
  	public int delete(TileMatrix data) throws SQLException {
  		DeleteBuilder<TileMatrix, TileMatrixKey> db = deleteBuilder();
  
  		db.where().eq(TileMatrix.COLUMN_TABLE_NAME, data.getTableName()).and()
  				.eq(TileMatrix.COLUMN_ZOOM_LEVEL, data.getZoomLevel());
  
  		PreparedDelete<TileMatrix> deleteQuery = db.prepare();
  		int deleted = delete(deleteQuery);
  		return deleted;
  	}
docs: {@inheritDoc}