Ch 5

Question 1

Two types of vector data formats are _____and ____

Answer 1

geodatabase and shapefiles

Question 2

Choose all possible answers - which methods are used to extract or subset data from a dataset?

queries
manual selection
project
clip

Answer 2

manual selection, clip

Question 3

T or F
Streaming data or GIS web services are datasets stored on your local computer

Answer 3

F

Question 4

T or F
Shapefiles consist of more than one file

Answer 4

T
Shapefiles consist of, at minimum, a .shp, .dbf, and .shx

Question 5

A _______can be a point, line, or polygon and represent an vector object or location on a map

Answer 5

feature

Question 6

A __________stores feature classes that have the same coordinate system and the same spatial extent

Answer 6

Feature dataset

Question 7

A _________ is a homogeneous collections of features with a common spatial representation and set of attributes stored in a database table, for example, a line ________representing road centerlines.

Answer 7

feature class, feature class

Question 8

A ______ is the native data structure for ArcGIS and is the primary data format used for editing and data management.

Answer 8

geodatabase

Question 9

What corresponds to or can be represented by a shapefile?

Answer 9

feature class

Question 10

_____ are vector feature classes developed for the early version of ArcView and have been carried over into ArcGIS.

Answer 10

Shapefiles

Question 11

______ (TIFF) commonly used for air photos

Answer 11

Tagged Image File Format

Question 12

What is a collection of related feature classes that share a common coordinate system

Answer 12

Feature Dataset:

Question 13

What is a homogeneous collection of common features, each having the same spatial representation—such as points, lines, or polygons—and a common set of attribute columns (e.g., a line ________ representing roads)

Answer 13

feature class

Question 14

What is the difference between a feature class and a feature dataset?

Answer 14

A feature class is collection of common features, each having the same spatial representation—such as points, lines, or polygons—and a common set of attribute columns. A feature dataset is a collection of related feature classes that share a common coordinate system

Question 15

______ displays addresses on a map by matching postal data fields in a table to a street data set

Answer 15

Geocoding

Question 16

_____ are used to extract data using an expression based on an attribute field

Answer 16

Queries

Question 17

A _____extracts features within a bounding polygon from another feature class

Answer 17

clip

Question 18

An _____extracts the features outside of a bounding polygon from another feature class

Answer 18

erase

Question 19

_____combines all features from two or more data sets into a single new feature class

Answer 19

Merging

Question 20

In what circumstances does merging work best?

Answer 20

When two adjacent feature classes have attribute tables with the same fields

Question 21

_____ removes boundaries of features with the same value in the specified attribute field(s)

Answer 21

Dissolving

Question 22

Give 3 examples of data types used in ArcGIS

Answer 22

shapefiles, tiffs, geodatabases, database connections, layer files, tables, TIN, CAD drawings

Question 23

A _____file references a feature class and stores information about its properties, such as how it should be displayed.

Answer 23

layer

Question 24

______are the recommended model for storing spatial information for ArcGIS.

Answer 24

Geodatabases

Question 25

______are vector feature classes developed for the early version of ArcView and have been carried over into ArcGIS.

Answer 25

Shapefiles

Question 26

The ______ is designed to handle the storage of discrete
objects on the earth’s surface, such as sampling sites, roads, or parcels.

Answer 26

vector data model

Question 27

Name 2 benefits of the vector data model:

Answer 27

It can store the location and shape of individual features, the linked attribute table provides great flexibility in the number and types of attributes that can be sorted out each feature, the vector model is ideally suited to mapmaking because of high precision and detail features that can be obtained, it is a compact way of storing data

Question 28

Name one drawback of the vector model

Answer 28

Poorly adapted to storing continuous surfaces such as elevation or precipitation
some types of analysis are more time-consuming to perform with vectors than they are with rasters

Question 29

What two types of vector models exist

Answer 29

The spaghetti model and the topological model

Question 30

D blank model stores features as independent objects unrelated to each other

Answer 30

Spaghetti

Question 31

The blank data model stores features but it also contains information about how the features are spatially related to each other

Answer 31

Topological