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Lesson 6 Self-Quiz

If Mr. Smith’s bike has been sent to his new address, but the bill to his old one, it can most likely be attributed to a lack of data _______.
integrity
A collection of related fields such as a person’s name, address, and age.
Record
In an object-oriented database, attributes are specific instances of a class that can contain both data and instructions to manipulate the data.
false
In the object-oriented database model, this term is the equivalent to a field in a relational model.
Method
In a distributed database, all the data must be physically located in one place.
false
This type of database is organized into many tables with common data items (key fields) linking the tables to one another.
Access to these databases is offered to the public or selected outside individuals, for a fee.
Commercial databases
The logical arrangement of data in a database is called the database model.
true
Relational database tables require a common data item.
true
This subsystem defines the logical structure of the database by using a data dictionary or schema.
Data definition
A record is a collection of related tables.
false
Which of the following is not an advantage of using a database?
Reliability
Information collected by an organization from a variety of external and internal databases is stored in this special type of database.
Which of the following is an advantage of using multidimensional databases?
Conceptualization
The company database may be stored on a central database server and managed by a database administrator.
true
Individual databases are the foundation of management information systems.
false
Which view of data deals with how the data is actually formatted and located?
Physical view
Typically, one of the duties of a database administrator is to interact with the data administration subsystem.
true
The combined information presented on this type of database can be used to change the whole merchandising strategy of a store.
Company

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