|
|
|
|
||||
|
Historic Software
Origin:
|
ArcInfo8
|
|
|
|||
|
Data model
for linkage between feature geometry & attribute data:
|
|
Georelational: geometry
linked to attribute table
|
|
|||
|
|
Geometry
|
Attributes
|
Geometry
|
Attributes
|
Geometry
|
Attributes
|
|
Type of file
the data is stored in:
|
|
Relational table
|
Binary file-ARC
|
|
|
DBASE
table
|
|
Collection
of datasets:
|
|
N/A: A folder containing
workspaces
|
N/A: A folder containing
shapefile folders
|
|||
|
A dataset:
|
A geodatabase feature
dataset
|
ArcInfo
workspace (contains coverages)
|
|
|||
|
A data layer
(e.g., roads, blockgroups, etc. ):
|
|
A coverage
|
|
|||
|
In coverages,
each layer (a coverage) contains:
|
N/A
|
|
N/A
|
|||
|
Types of features available in each data model: |
Types of geodatabase
features:
|
Types of coverage
feature classes:
|
Types of shapefile
features:
|
|||
|
Basic features:
More complex features: Network
features (simple and complex junctions, simple and complex network edge
features), user created custom features. |
Primary:
|
Secondary:
Annotation, links, sections, tics |
Point, multipoint,
line, and polygon
|
|||
|
Compound:
|
||||||
|
Geometry available:
|
|
Straight segments
|
Straight segments
|
|||
|
Topological
associations possible?
|
Yes -- lines w/ geometric
network, polygons w/ on-the-fly editing
|
|
|
|||
|
User-defined
behaviors allowed?
|
|
|
Yes -- loosely coupled
with features using VBA scripting
|
|||