NR 658 Final Exam

NR 658 Final Exam Questions With
Complete Answers


Data zBase z- zAnswer z- za zstorage zsystem zused zto zquery, zmanipulate, zand zanalyze ztabular zdata

Four zcomponents zof za zGIS z- zAnswer z- zHardware

Software

People!!

Spatial zData

Topology z- zAnswer z- zWhats znext zto zwhat zand zwhat zis zconnected zto zwhat

Hierarchical zDatabase z- zAnswer z- z1:1 zparent/ zchild

Secure, zrestricted zpaths

Network zDatabase z- zAnswer z- zmultiple zparents/child

flexible

complex

Relational zDatabase z- zAnswer z- zUSED zIN zGIS

flexible

Boolean zAlgebra z- zAnswer z- zAND

OR z

NOT

Attribute zdata z- zAnswer z- ztables zof znominal zdata

color

type

ratio

linked zto zspatial zdata

Spatial zData z- zAnswer z- zlocation

coordinates

, Raster z- zAnswer z- zAdvantages:

simple zdata zstructures

easy zoverlay

inexpensive



Disadvantages:

Lacks zdetail

takes zup za zlot zof zstorage

not zvisually zappealing



Topology zis zimplicit zbecause zof zthe zCartesian zCoordinate zSystem

Vector z- zAnswer z- zAdvantages:

visually zappealing

uses zless zdata

detailed



disadvantages:

expensive

difficult zto zoverlay



Topology zmust zbe zcreated

Storing zvector zdata z- zAnswer z- zspaghetti zmodel- zcomplex/confusing



topological zmodel- zshows zinterconnections

arc znode, zvery zpowerful

Storing zraster zdata z- zAnswer z- zfull zlength

chain zcoding

run zlength

block zcoding