Chapter 6 Quiz
In a student database, a row that describes the top student, including his or her LastName, FirstName, and StudentNumber, is an example of a ______________.
record
Relational databases enforce ______________ integrity to ensure, for instance, that a teacher can't be assigned to a CLASS table unless they already exist in the TEACHER table.
referential
If you needed a DBMS for large commercial use on a mainframe, _____________ would be a viable option.
Microsoft SQL Server
Which tool enables users to view the same data in different ways using multiple dimensions?
OLAP
_______________ databases are by far the most popular type of database on the market today.
Relational
The most popular data manipulation language and method to "question" a database is called ______________.
Structured Query Language
In a student database, a column called LastName would be an example of a(n) _____________.
attribute
A(n) __________ is a popular way to describe relationships (i.e., one-to-one, one-to-many) in a relational database.
entity relationship diagram
Which of the following statements is FALSE about business intelligence (BI) systems?
A. BI systems are used by any business professionals and knowledge workers. B. BI systems process operational and social data. C. BI systems identify patterns, relationships, and trends. CORRECT D. BI systems only support decision-making activities. E. BI systems have five components: hardware, software, data, procedures, and people.
Among the following statements, which one is NOT applicable to big data?
A. Big data has a variety of data with structured data and free-form text and logs. B. Big data can consist of multimedia files like graphics, audio, and video. CORRECT: C. Big data can be processed with traditional techniques. D. Big data is generated rapidly. E. Big data data sets are at least a petabyte in size.
Which of the following is NOT a function of a data warehouse?
A. Cleanse data B. Catalog data C. Obtain data CORRECT: D. Filter data E. Organize and relate data
Which of the following statements is NOT a characteristic of Hadoop?
A. Hadoop is an open source software framework. B. Hadoop breaks a big data problem down into sub-problems. C. Hadoop combines results into a smaller data set that is easier to analyze. CORRECT: D. Hadoop extracts data from multiple tables that have a relationship. E. Hadoop enables distributed parallel processing of huge amounts of data across inexpensive computers.
Among the following, what is the best way to distinguish between reporting tools and data mining tools?
A. The type of data used B. The difference in the input data C. The ways of deploying the results CORRECT D. The complexity of techniques used E. The objective of using these tools
Which of the following is NOT a rule in an organization's information policy?
A. Which users and organizational units can share information CORRECT: B. What the relationships inside the data are C. Where information can be distributed D. Who is responsible for updating and maintaining the information E. Procedures and accountabilities around managing data resources
Which of the following involves searching for patterns and relationships among data?
Data mining
What is the first step you should take in managing data for a firm?
Identify the data needed to run the business.
A ________ is represented by a 0 or 1. Eight together make a byte (i.e., 00101100).
bit
A ________ in a database represents a single character such as a letter or number.
byte
Microsoft Azure SQL is an example of a _________________ database.
cloud
The special organizational function whose responsibilities include the technical and operational aspects of managing data, including physical database design and maintenance, is called ________.
database administration
In a student database, a collection of related attributes such as LastName, FirstName, and Student# creates a(n) _______________.
entity
The most common use of nonrelational database management systems is for__________________.
managing extremely large data sets
The data _______________ language would allow you to retrieve information from the database (i.e., using the SELECT, FROM, WHERE commands).
manipulation
Relational tables need to be ______________ to help avoid duplicate data.
normalized
A(n) __________ key uniquely identifies a row or record in a table.
primary
