Exam 1: Database Systems

What are some reasons for studying file systems?

When data are entered into a form and saved, they are placed in the underlying database as knowledge.

One disadvantage of the DBMS is that it increases the risk of data security breaches.

What are the problems associated with file systems? How do they challenge the types of information that can be created from the data as well as the accuracy of the information?

exists when it is possible to make changes in the data storage characteristics without affecting an application program's ability to access data.

refer to a type of database that stores most of its data in RAM rather than in hard disks.

The term refers to scattered locations storing the same basic data.

The organization of data within folders in a manual file system is determined by .

Structural dependence exists when it is possible to make changes in the file structure without affecting the application program's ability to access the data.

A(n) is a spur-of-the-moment question.

The term refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment.

A is a logically connected set of one or more fields that describes a person, place, or thing.

Data constitute the building blocks of information.

A is a collection of related records.

The DBMS uses the to look up the required data component structures and relationships, thus relieving programmers from having to code such complex relationships in each program.

A data warehouse can store data derived from many sources.

Accurate, relevant, and timely information is the key to .

Data is the result of processing raw facts to reveal its meaning.

Which of the following refers to the situation where different versions of the same data are stored at different places because they weren't updated consistently?

Most data that can be encountered are best classified as .