Question 1

A _____ is a subset of a data warehouse that is used by small- and medium-sized businesses and departments within large companies to support decision making.

Accepted Answer

A)  data dictionary
B)  data model
C)   data mart
D)   data mine

Question 2

Data modeling done at the level of an entire enterprise is called _____.

Accepted Answer

enterprise...

Question 3

Which of the following statements is true of a database?

Accepted Answer

A)  It is accessed primarily for use by an organization's database administrator and data administrator.
B)  It provides an essential foundation for an organization's knowledge management and artificial intelligence systems.
C)   It is a collection of unstructured data.
D)   It helps companies analyze information to open new market opportunities.

Question 4

After entering data into a relational database, users can make all of the following basic data manipulations except:

Accepted Answer

A)  ​projecting
B)  ​organizing
C)   ​selecting
D)   ​joining

Question 5

Two of the major challenges business users face when using big data are finding the information they need to make decisions and knowing that the data they have is valid.

Accepted Answer

A) True 
 B)False

Question 6

For each data item, a data dictionary usually contains information such as the name of the data item, the range of values that can be used, and the amount of storage needed for the item.

Accepted Answer

A) True 
 B)False

Exam 3: Database Systems and Big Data

For each data item, a data dictionary usually contains information such as the name of the data item, the range of values that can be used, and the amount of storage needed for the item.

Correct Answer
verified

A _____ is a subset of a data warehouse that is used by small- and medium-sized businesses and departments within large companies to support decision making.

Correct Answer
verified

Data modeling done at the level of an entire enterprise is called _____.

Correct Answer
verified
enterprise...
View Answer

Which of the following statements is true of a database?

Correct Answer
verified

Two of the major challenges business users face when using big data are finding the information they need to make decisions and knowing that the data they have is valid.

Correct Answer
verified

After entering data into a relational database, users can make all of the following basic data manipulations except:

Correct Answer
verified

Exam 3: Database Systems and Big Data

For each data item, a data dictionary usually contains information such as the name of the data item, the range of values that can be used, and the amount of storage needed for the item.

Correct AnswerverifiedShow Answer

A _____ is a subset of a data warehouse that is used by small- and medium-sized businesses and departments within large companies to support decision making.

Correct AnswerverifiedShow Answer

Data modeling done at the level of an entire enterprise is called _____.

Correct Answerverifiedenterprise...View AnswerShow Answer

Which of the following statements is true of a database?

Correct AnswerverifiedShow Answer

Two of the major challenges business users face when using big data are finding the information they need to make decisions and knowing that the data they have is valid.

Correct AnswerverifiedShow Answer

After entering data into a relational database, users can make all of the following basic data manipulations except:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
enterprise...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified