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67 Cards in this Set

  • Front
  • Back

Data redundancy

occurs when data is stored in multiple locations

Which of the following statements related to the event-driven approach is false?

It focuses on how users interact with business events and processes.

A record layout depicts:

the fields comprising a record

Grouping or categorizing data according to common attributes is called:

classifying data

Another name for sequential coding is:

serial coding

The uniform product codes (UPC) used in supermarkets is a type of:

block code

A company uses a 7-digit number to identify customers. For example, the customer 1532789indicates the following information: digits1-2, state, 15 = Georgiadigit3, type of organization, 3 = government agencydigit4, credit terms, 2 = 2/10, n/30digits5-7, unique customer identifier, 789

Thistype of coding scheme is:

significant digit

A postal ZIP code is an example of which of the following coding schemes?

hierarchical code

The coding system that is most understandable by human information processors is:

mnemonic coding

Which of the following is the most likely coding scheme for college courses?

mnemonic coding

An extracharacter added to a numeric code as a device to test the accuracy of dataentered into a computer system is called a:

check digit

Assigningnumbers to objects in chronological sequence is known as:

sequential coding

The ____concentrates on the process being performed with data playing a secondary orsupporting role.

applications approach

Whichof the following statements regarding the centralized database approach to datamanagement is false?

In this approach, data and applications are dependent on each other.

The computersoftware needed to implement a database approach to data management that is notneeded with the applications approach to data management is:

database management system (DBMS) software

Which of thefollowing is not a database model discussed in Chapter 5:


The featureof a database management system that enables nontechnical users to access adatabase and to produce inquiry reports is the:

query language

database approachand the applications approach and is known as:

data independence

Withthe centralized database approach to data management, we expect to have:

improved data integrity

Whichof the following advantages of the centralized database approach does notoccur because of a reduction in data redundancy?

reduced user and programmer training

Which of thefollowing is not a function that a database management system performs?

Coordinating access to data stored in theapplications programs.

Theexploration, aggregation, and analysis of large quantities of varied data fromacross the organization is known as:

data mining

Whichof the following statements related to events-driven systems is false?

Organizations adopting an events-driven systemare focused on capturing data for the purpose of generating reports.

A(n)____ reflects a system's key entities and the relationship among them.

entity-relationship diagram

Aresource, event, or agent about which data are collected is called:

an entity

Inan entity-relationship diagram, ____ are used to show the characteristics ofrelationships


Adata model depicts the requirements for data as specified by the:


Ina(n) ____ database model, records are organized in a pyramid structure.


The ____database model works well for simple data structures, but falls apart quicklywhen the data becomes more complex.


In a(n) ____database model, a child record may have more than one parent.


____ databases include abstract data types thatallow users to define characteristics of the data to be stored when developingan application.


Ina(n) ____ database model, data are logically organized into two-dimensionaltables.


Theuse of information systems facilities to focus on the collection, organization,integration, and long-term storage of entity-wide data is known as:

data warehousing

In anobject-oriented database model, what types of objects can be stored through useof abstract data types, inheritance, and encapsulation?

both simple and complex


include abstract data types

If attributeA determines a single value for attribute B at any time, we say that attributeB is ____.

functionally dependent on attribute A

Arelation that is in ____ form contains repeating attributes within each row orrecord


Arelation is in second normal form (2NF) if it is in first normal form (1NF)and:

no non-key attribute is dependent on only aportion of the primary key

Ofthe following options, a database that is in ____ form has the best design

third normal (3NF)

Theapplications approach to business event processing:

has data redundancy

Runningan applications approach to sales and inventory programs leads to:

data redundancy

Data flowsthat mirror and monitor business operations are called ____ flows.

horizontal information

Dataflows that provide a basis for managerial decisions are called ____ informationflows


Theapproach to business event processing in which facts are stored in a relationaldatabase is

the centralized database approach

Ina DBMS, a complete description of the configuration of record types, data itemsand the relationships among them is known as:


A ____describes a portion of a DBMS' configuration of record types and data items andthe relationships among them.


Theway a user thinks of the data in a database is called the user's:

logical view

Whichof the following statements is true of a hierarchical DBMS?

parent records can have many child records

Whichof the following statements is true of a network database model?

both a and b

Themodel that only works well for simple data structures is the:

hierarchical database model

Themodel that logically organizes data into two-dimensional tables is the:

relational database model

The modelthat includes abstract types that allow users to define data to be stored inthe database is the:

object-oriented database model

Aunique identifier that serves as an address for each row in a database iscalled:

the primary key

In theapplications approach to business event processing, a data change in oneapplication before updating another application could lead to:

inconsistent data

A(n)____ depicts user requirements for data stored in a database.

data model

entity-relationship model

E-R diagram

Increating an entity-relationship diagram, the correct sequence of steps is

identify entities, identify relationships,create tables

Forthe following diagram, which item is the entity?


Themapping of the relationships between entities would be used in the developmentof a(n):

E-R diagram

Whichof the following is not a relationship type?


Whichof the following database types has dominance in organizations?


Each relationship in an E-R diagram has a ____that shows the degree to which each entity participates in the relationship.


A decisionmaker prepares a presentation in a suitable format for a given decision at agiven point in time when using a(n):

decision support system (DSS)

Theprincipal difference between an executive information system (EIS) and adecision support system (DSS) is that an EIS:

is primarily about collecting and presentinginformation without doing additional processing or calculations

Theinformation system which emulates the problem-solving techniques of humans iscalled a(n):

expert system (ES)

Whichof the following statements about expert systems (ES) is false:

They only work well for simple decisions

Thecomputer-based system of hardware and software that mimics the human brain'sability to recognize patterns or predict outcomes using less-than-completeinformation is referred to as:

neural networks

Asoftware program that may be integrated into DSS or other software tools isa(n):

intelligent agent