Each feature class consists of one feature table. This table has a fixed basic structure, but you can create additional columns (attributes).
Basic Structure: Every feature has an identifier FID (feature identifier) that is unique for each database schema ( industry model ).
The feature geometry is saved in Oracle Spatial (standard attribute GEOM).
For more information, refer to the Oracle Spatial Users Guide and Reference.
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Feature Class Types |
Description |
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For attribute tables (features without geometry). |
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For centroids. A special point associated with a polygon that is defined by line strings. A centroid is surrounded by the features of a line string feature class that builds the polygon. Examples: parcels, land use. |
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For features with any geometry (lines, point, or polygon). Normally, a feature class contains features of only one geometry type. In a collection feature class, you can store features with different geometry, which means that you can store point features, line features, and so on in one single feature class. |
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For polylines. A group of two line string feature classes. |
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For areas. Built as a group of a line string and a polygon feature class. |
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For dimensioning. Consists of related tables: Dimension feature class <name>, line string feature class <name>_L, label feature class <name>_TBL with line string <name>_HL and point feature class <name>_P. |
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For text. Is related to a parent feature class and therefor can only be created from feature class level. |
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For polylines. |
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For (closed) polygons. Consists of arcs as well as lines or polylines. |
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For points. |