Exam 13: Data Management Concepts

________ is a multidimensional generalization of the 2-dimensional relational table which provides incredibly fast response times.

When a DBA is present and active within an organization,users are almost always willing to give up their responsibility for data elements.

One primary objective of a data dictionary is to eliminate data ________ to the extent feasible.

Relational databases use relational algebra to create tables.

The entity-relationship data model is perhaps the most promising modeling technique.

ACID is used to prevent database fraud.

The use of a randomizing transformation to process transactions against a direct-access master file is based on

In a relational database,tables in which no key field is allowed to determine the values of any nonkey field are said to be

________ in ACID means a transaction is not undone if the system fails after it is completed.

An invaluable benefit of DBMSs is their ability to provide ________ for databases.

A database is defined in terms of the kind of information it includes and the purposes for which it is to be used.This is an example of defining database architecture at the

The computer language that allows a DBA to define the logical structure of the database is called ________.

The terms field,data item,attribute,and element are synonyms.

Nominalization is the process of applying rules to normal forms in relational database structures.

Occurrences are also known as instances.

________ refers to the physical form that data will be stored in,such as BCD or EBCDIC.

The smallest block of data that can be stored and retrieved in an information system is a(n)________.

Software tools such as Casewise are used to visually represent the E-R models.

To process and locate records in files,it is necessary to use a(n)

The cost of processing per transaction in a high-activity environment is the lowest in which of the following file organization techniques?