Deck 8: Attribute Data Management

Question 1

Describe the four types of attribute data by measurement scale.

Answer 1

No Answer

Question 2

Explain the difference between a feature attribute table and an attribute table such as an Excel file.

Answer 2

No Answer

Question 3

Each row in an attribute table represents a _______ and each column represents a _______:

A) feature, characteristic
B) characteristic, characteristic
C) feature, feature
D) characteristic, feature

Answer 3

feature, characteristic

Question 4

Which of the following operations can create new attribute data from existing data?

A) both data classification and data computation
B) data classification
C) data query
D) both data query and data computation
E) data computation

Question 5

Data that can be differentiated by a ranking relationship are called:

A) nominal data
B) interval data
C) ordinal data
D) ratio data

Question 6

ArcGIS can import attribute data from dBASE and Excel files.

Question 7

If you have 3 tables to be linked, how many relates do you need to establish?

A) 3
B) 4
C) 1
D) 2

Question 8

In ArcGIS, a domain is a property of a:

A) feature dataset
B) feature class
C) geodatabase

Question 9

Similar to business management, a GIS also uses a database management system to manage attribute data. What separate GIS from business management?

Question 10

Suppose you have received a vegetation map from the US Forest Service. The map has a field called area, which is measured in square meters. But you need area measurements in acres for your project. Describe the procedure you will follow to solve the problem. (The equation for converting square meters to acres is: acres = area in m² / 1000000 * 247.11)

Question 11

What numeric data type will you use to store values like 321456, 678456, and 912567?

A) Double-precision float
B) Long integer
C) Single-precision float
D) Short integer

Question 12

Some raster layers are associated with a value attribute table. What attributes does a value attribute table contain?

Question 13

Define a "primary key."

Question 14

The simplest data relationship for GIS operations is the:

A) one-to-one relationship
B) one-to-many relationship
C) many-to-one relationship
D) many-to-many relationship

Question 15

Define the "many-to-one relationship" in a relational database.

Question 16

Briefly explain the normalization rule in designing a relational database.

Question 17

Data grouped into different categories are called:

A) interval data
B) nominal data
C) ratio data
D) ordinal data

Question 18

Which of the following is not true about a relational database?

A) The database is made of separate tables.
B) None of these is correct.
C) A primary key and a foreign key are needed to relate two tables in the database.
D) Attributes in the database can be numeric or character.

Question 19

Explain the similarity, as well as the difference, between a join operation and a relate operation.

Question 20

List two advantages of using the relational database model in GIS.

Question 21

Which of the following is a potential drawback of normalization?

A) slowing down of data access
B) running out of primary and foreign keys
C) missing tables
D) none of these is correct

Question 22

Explain how the attribute domain rule works in a geodatabase.

Question 23

ArcGIS can work with both internal and external relational databases.

Question 24

Describe two ways of creating new attributes from the existing attributes in a data set.

Question 25

Which of the following is not considered a data type?

A) text or character
B) number
C) degree
D) date

Question 26

Provide an example of a spatial join operation.

Question 27

The width used in a field definition should accommodate the largest number or the longest string in the data.

Question 28

How does a relationship class work in a geodatabase?