managing vector data

Question 1

nodes

Answer 1

endpoints of line data

Question 2

vertex

Answer 2

intermediate points on a line or multiple points making a polygon

Question 3

feature ID

Answer 3

special field linking spatial data with the attributes

Question 4

multi part features

Answer 4

a single feature includes multiple spatial objects such as Hawaii

Question 5

feature dataset

Answer 5

combines feature classes which helps organize similar data or serves specific functions

Question 6

spaghetti model

Answer 6

vector model that stores features as independent objects commonly used to transfer vector features between GISs

Question 7

topological model

Answer 7

vector model that stores features and information on how the features are related: adjacency, connectivity, overlap, and intersection

Question 8

characteristics of GIS data

Answer 8

files may be very large, data often shared by multiple users, comes from many different sources that must work together, data includes local files and internet services, data formats don’t always follow the latest conventions

Question 9

organizing data files

Answer 9

mindful of names and file locations, organize files using folders, keep file names short, watch file extensions

Question 10

lock file

Answer 10

keeps track of which documents are being used preventing someone else from using it at the same time

Question 11

import data

Answer 11

copies a data set into the geodatabase converting as needed

Question 12

export data

Answer 12

copies data from a geodatabase to another location

Question 13

event layer

Answer 13

temporary spatial layer made by some tools similar to point features, typically exported to a shape file to become permanent

Question 14

geocoding

Answer 14

process of converting addresses in a table to x-y locations on a map

Question 15

clip

Answer 15

uses a polygon feature class to delineate the area of interest only keeping the portion of features within the boundary

Question 16

merge

Answer 16

combines two similar feature classes into a new dataset

Question 17

append

Answer 17

copies features to an already existing dataset

Question 18

dissolve

Answer 18

used to merge features when they share the same attribute values

Question 19

information in an object description

Answer 19

metadata, tags, summary, description, and credits; potentially use limitations, appropriate scale range, and the bounding box

Question 20

shapefile

Answer 20

spaghetti data format containing vector features with table attributes stored in a base file

Question 21

coverage

Answer 21

oldest vector format with a .e00 extension that must be converted to a shapefile

Question 22

project file

Answer 22

organizes all pieces of the project storing no spatial data files, just the source data

Question 23

pathname

Answer 23

lists the successive folders traversed to a dataset, either absolute or relative

Question 24

absolute pathname

Answer 24

starts at the drive letter

Question 25

relative pathname

Answer 25

starts at the file below the drive letter

Question 26

environmental settings

Answer 26

control the operation of tools