Chapter 6

DBMS for midrange computers include all of the following EXCEPT - DB2. - Oracle. - Microsoft SQL Server. - Microsoft Access.

Microsoft Access.

OLAP is a key tool of BI. - True - False

True

OLAP is a tool for enabling 1) Users to obtain online answers to ad-hoc questions in a rapid amount of time. 2) Users to view both logical and physical views of data 3) programmers to quickly diagram data relationships. 4) programmers to normalize data

Users to obtain online answers to ad-hoc questions in a rapid amount of time.

In a relational database, a record is referred to in technical terms as a(n) - tuple. - row. - entity. - field.

tuple

An alternative to using application server software for interfacing between a Web server and back end databases is - CGI - HTML - Java - SQL

- CGI

A data dictionary is a language associated with a database management system that end users and programmers use to manipulate data in the database - True - False

- False

A data warehouse may be updated by a legacy system - True - False

- True

Every record in a file should contain at least one key field - True - False

- True

In a web-based database, middle ware is used to transfer information from the organization's internal database back to the web server for delivery in the form of a web page to the user - True - False

- True

OODBMS are slower than relational DBMS - True - False

- True

The select operation - combines relational tables to provide the user with more information than is otherwise available - creates a subset consisting of columns in a table - identifies the table from which the columns will be selected - creates a subset consisting of all records in the file that meet stated criteria

- creates a subset consisting of all records in the file that meet stated criteria

A data warehouse is composed of - historical data from legacy systems - current data - internal and external data sources - historic and current internal data

- historic and current internal data

The type of database management approach that can handle multimedia is the - hierarchical DBMS - relational DBMS - network DBMS - object-oriented DBMS

- object-oriented DBMS

The type of logical database model that treats data as if they were stored in two-dimensional tables is the - OODBMS - pre-digital DBMS - relational DBMS - hierarchical DBMS

- relational DBMS

Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are know as - DSS - Business intelligence - OLAP - data mining

Business intelligence

Microsoft SQL Server is a(n) - DBMS for small handheld computing devices. - Internet DBMS. - desktop relational DBMS. - DBMS for midrange computers.

DBMS for midrange computers.

A data warehouse is typically comprised of several smaller data marts. - True - False

False

A grouping of characters into a word, a group of words, or a complete number is called a record. -True - False

False

A web interface requires changes to the internal database - True - False

False

OLAP enables users to obtain online answers to ad-hoc questions in a fairly rapid amount of time, except when the data are stored in very large databases. - True - False

False

The tool that enables users to view the same data in different ways using multiple dimensions is - predictive analysis. - SQL. - OLAP. - data mining.

OLAP.

The most prominent data manipulation language today is - Access - DB2 - SQL - Crystal Reports

SQL

__________ tools are used to analyze large unstructured data sets, such as e-mail, memos, survey responses, etc., to discover patterns and relationships. - OLAP - Text Mining - Web mining - Web content mining

Text mining

A DBMS separates the logical and physical views of the data - True - False

True

Common Gateway Interface is a specification for processing data on a Web server - True - False

True

Data administration is a special organizational function that manages the policies and procedures through which data can be managed as an organizational resource - True - False

True

Data cleansing is the same process as data scrubbing. - True - False

True

In a relational database, complex groupings of data must be streamlined to eliminate awkward many-to-many relationships. - True - False

True

Many applications today require databases that can store and retrieve multimedia. - True - False

True

The specialized language programmers use to add and change data in the database is called - a data access language. - a data manipulation language. - structured Query language. - a data definition language.

a data manipulation language.

A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because - a data mart typically focuses on a single subject area or line of business. - all the information is historical. - a data mart uses a Web interface. - all of the information belongs to a single company.

a data mart typically focuses on a single subject area or line of business.

The data dictionary serves as an important data management tool by - assigning attributes to the data. - creating an inventory of data contained in the database. - presenting data as end users or business specialists would perceive them. - maintaining data in updated form.

creating an inventory of data contained in the database.

An automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security is the - data dictionary. - data definition diagram. - entity-relationship diagram. - relationship dictionary.

data dictionary.

Which common database challenge is illustrated by the text's discussion of receiving multiple pieces of the same direct mail advertising - data normalization - data accuracy - data redundancy - data inconsistency

data inconsistency

Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called - data auditing. - defragmentation. - data scrubbing. - data optimization.

data scrubbing.

The special organizational function whose responsibilities include the technical and operational aspects of managing data, including physical database design and maintenance, is called - data administration - database administration - information policy administration - data auditing

database administration

DSMSs typically report-generating tools in order to - retrieve and display data - display data in an easier-to-read format - display data in graphs - perform predictive analysis

display data in an easier to read format

A schematic of the entire database that describes the relationships in a database is called a(n) - data dictionary - intersection relationship diagram - entity-relationship diagram - data definition diagram

entity-relationship diagram.

Data mining is a tool for allowing users to - quickly compare transaction data gathered over many years - find hidden relationships in data - obtain online answers to ad hoc questions in a rapid amount of time summarize massive amounts of data into much smaller, traditional reports

find hidden relationships in data

A field identified in a record as holding the unique identifier for that record is called the - primary key. - key field. - primary field. - unique ID.

key field.

Which of the following non-digital data storage items is most similar to a database - library card catalog - cash register receipt - doctor's office invoice - list of sales totals on a spreadsheet

library card catalog.

A DBMS reduces data redundancy and inconsistency by - enforcing referential integrity - uncoupling program and data - utilizing a data dictionary - minimizing isolated files with repeated data

minimizing isolated files with repeated data

The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called - normalization. - data scrubbing. - data cleansing. - data defining.

normalization.

The type of database management approach that can handle multimedia is the - hierarchical DBMS. - relational DBMS. - network DBMS. - object-oriented DBMS.

object-oriented DBMS.

In terms of data relationships, associations refers to - events linked over time. - patterns that describe a group to which an item belongs. - occurrences linked to a single event. - undiscovered groupings.

occurrences linked to a single event.

A DBMS makes the - physical database available for different logical views. - logical database available for different analytical views. - physical database available for different analytical views. - relational database available for different physical views.

physical database available for different logical views.

A field identified in a table as holding the unique identifier of the table's records is called the - primary key. - key field. - primary field. - unique ID.

primary key.

Duplicate data in multiple data files is called data ______________ - redundancy - repetition - independence - partitions

redundancy

In a table for customers, the information about a single customer would reside in a single - field - row - column - table

row.

Which of the following is NOT a method for performing a data quality audit - surveying entire data files - surveying samples from data files - surveying data definition and query files - surveying end users about their perceptions of data quality

surveying data definition and query files

Which of the following is a main disadvantage to a distributed database system - lack of flexibility - susceptibility to data inconsistency - poor responsiveness to local users - requires more expensive computers

susceptibility to data inconsistency