See Index Areas in
this user guide for a general description of Index Areas. An Index Area is stored as a simple
area feature in the product. The capturing on the database level is composed either out of an
Index Area Component (Simple Area Feature) or by one or more other area features (Complex Area
Feature).
In the case of a complex feature, the components can be any of the following area types:
- Administrative Area;
- Administrative Place;
- Built-Up Area;
- Postal District; or
- Census District.
Index Areas are stored as polygons in the
oa6 table (Other Named Areas - Index
Areas). All Index Orders are stored in one table. The
oa6 table has the Official Name,
Alternative Name and Index Order as attributes.
Example: A partial listing of the fields in the OA6 table:
ID |
FEATTYP |
NAME |
INDORDER |
22826160054351 |
9200 |
Central Park |
9 |
22826160165082 |
9200 |
Chadderton |
8 |
22826160054365 |
9200 |
Chaigley |
9 |
In MultiNet
® Shapefile and OSL formats, the following Relationships are used
to build and associate indexes:
RELATIONSHIP |
SHAPEFILE TABLE |
Place Within Place |
pp |
Administrative Area Replaced by Index Area |
ai |
Road Element in Named Area |
ta |
Ferry Connection in Named Area |
ta |
Address Area Boundary Element |
ta |
Address Area Boundary Element in Named Area |
ta |
Service in Named Area |
sa |
Built-up Area in Named Area |
ba |
Center Point of Feature Belonging to Feature |
sa |
Administrative Area Replaced by Index Area in Shapefile
The Shapefile ai table stores all Area identifiers of a certain Area feature type that can
be replaced by an Area of a different Area feature type. This can be Administrative Area
replaced by Index Area or Index Area replaced by Index Area.
For the "Area replaced by Index Area" Relationship where it concerns an Administrative Area
in the AREID field, the INAREID and ARETYP are not filled in. Also, if an Order 8
Administrative Area has multiple Index Areas that cover its surface, there is no possibility
to choose one of those Index Areas as the second part of the "Area Replaced by Index Area"
Relationship. The relationship only indicates that the Order 8 Administrative Area can be
left out of the Index.
Example: All fields in the
ai table:
AREID |
FEATTYP |
INAREID |
ARETYP |
258261650045630 |
1120 |
|
|
258261630006667 |
1118 |
|
|
258261630087456 |
1119 |
|
|