See polygons table

Navigation:  Queries > Data sources connection >

See polygons table

 Previous pageReturn to chapter overviewNext page

Polygon is the only entity with own geometry in SIOSE data model. It’s defined as the land delimitation where the land cover is uniform and homogeneous according to SIOSE model.

“T_POLIGONOS” contains the geometry of all the SIOSE polygons and their information linked: land cover and attributes, surface, their production block, etc. The table contains the same number of entries than SIOSE polygons and allows the graphic representation.

The following table shows the main table fields of “T_POLIGONOS”:

FIELD

COMMENTS

ID1 /OBJECTID

IT IS THE MAIN KEY AND ALLOW THAT EACH TABLE ENTRY OR SIOSE POLYGON be uniquely identified

ID_POLYGON

it is the Universal Unique identifier (UUID) of polygons, URN   namespace. It is unique for each polygon. In SIOSE2005, THIS field was called GUID_SIOSE.

SIOSE_CODE(1)

SIOSE label

SIOSE_XML

It provides all the information about land cover linked to each polygon, and their attributes, in XML format.

SUPERF_HA

Polygon area, in hectares, with a precision of 4 decimal places. the surface has been obtained on the original projection in which they were DIGITALIZED: UTM projection for each autonomous community zone.

CODBLQ

numerical code associated to each production block. the block list is defined between the autonomous production team and national direction of the project.

OBSERVACIONES_C

it is a field TO save auxiliary information (text).

OBSERVACIONES_N

it is a field TO SAVE auxiliary information (number).

GEOMETRY

it is a field or fields where save the coordinates of each polygon vertex, and necessary elements for its representation. these fields could vary according to the program used: geodatabe ESRI shape_area y  shape_length, Access de Geomedia: Geometry y Geometry_sk,…etc)