Table Join
append the attributes from one table onto the other based on a field common to both. Usually used for one-to-one and many-to-one relationships.
Primary data
data created in-house, collected or developed by the intended user. Higher level of quality control but more costly to produce in most cases. Includes survey data, GPS data, aerial photograph, satellite image
Digitizer tablet
records movement of the digitizer on an electronically active grid
Vector
a graphic dat structure thats represents the points, lines and areas of a geographical space by exact X and Y coordinates
Data Conversion (in GIS)
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Raster
a form of GIS graphic data structure that quantizes space into a series of uniformly spaced cells
Coordinate Pair
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Unique Identifier
a field that uniquely identifies each row or feature; must be not null, contain unique values
Scanner Coordinates
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Adjacent polygon (in GIS)
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Secondary data
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Heads-up digitizing
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Table relate
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Field (attribute table)
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Primary key (attribute tables)
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Connectivity (of spatial features)
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Spaghetti data model
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Metadata
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Spatial data model
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Adjacent polygon
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Containment (of spatial features)
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Attribute table (vector)
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Look-up table (raster)
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File header (raster)
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Raster chain codes
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Run-length codes (raster)
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Quadtrees (raster)
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Select by spatial aspect
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Classification
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Reclassification
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