A georelational data model uses a split data system (spatial data and attribute data in different files) and the two tables are linked by feature ID. Each map feature has a unique label ID. Attribute data are stored in a “Feature Attribute Table”. Each map feature has a unique label ID.
In a table:
ROW = RECORD = TUPLE
COLUMN = FIELD = ITEM
The object oriented data model stores both spatial and attribute data in a single database to reduce processing overload.
In a table:
ROW = RECORD = TUPLE
COLUMN = FIELD = ITEM
The object oriented data model stores both spatial and attribute data in a single database to reduce processing overload.
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