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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 _______.
A collection of related fields such as a person’s name, address, and age.
In an object-oriented database, attributes are specific instances of a class that can contain both data and instructions to manipulate the data.
In the object-oriented database model, this term is the equivalent to a field in a relational model.
In a distributed database, all the data must be physically located in one place.
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.
Relational database tables require a common data item.
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.
Which of the following is not an advantage of using a database?
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?
The company database may be stored on a central database server and managed by a database administrator.
Individual databases are the foundation of management information systems.
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.
The combined information presented on this type of database can be used to change the whole merchandising strategy of a store.

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