Chapter 6 – Multiple Choice – Flashcards
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Which of the following best illustrates the relationship between entities and attributes? A)the entity CUSTOMER with the attribute PRODUCT B)the entity CUSTOMER with the attribute PURCHASE C)the entity PRODUCT with the attribute PURCHASE D)the entity product with the attribute CUSTOMER
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B)the entity CUSTOMER with the attribute PURCHASE
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Which of the following is /not/ one of the main problems with a traditional file environment? A) data inconsistency B) program-data independence C) lack of flexibility in creating ad-hoc reports D) poor security
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B) program-data independence
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A DBMS reduces data redundancy and inconsistency by A) enforcing referential integrity B) uncoupling program and data C) utilizing a data dictionary D) minimizing isolated files with repeated data
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D) minimizing isolated files with repeated data
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A characteristic or quality describing an entity is called a(n) A) field B) tuple C) key field D) attribute
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D) attribute
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Which of the following non-digital data storage items is most similar to a database? A) library card catalog B) cash register receipt C) doctor's office invoice D) list of sales totals on a spreadsheet
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A) library card catalog
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The confusion created by _____ makes it difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources. A) batch processing B) data redundancy C) data independence D) online processing
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B) data redundancy
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Duplicate data in multiple data files is called data ______ A) redundancy B) repetition C) independence D) partitions
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A) redundancy
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A DBMS makes the A) physical database available for different logical views. B) logical database available for different analytical views. C) physical database available for different analytical views. D) logical database available for different physical views.
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A) physical database available for different logical views
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The logical view A) shows how data are organized and structured on the storage media. B) presents an entry screen to the user. C) allows the creation of supplementary reports. D) presents data as they would be perceived by end users.
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D) presents data as they would be perceived by end users.
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DBMS for midrange computers include all of the following EXCEPT A) DB2. B) Oracle. C) Microsoft SQL Server. D) Microsoft Access.
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D) Microsoft Access.
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The type of logical database model that treats data as if they were stored in two-dimensional tables is the A) OODBMS B) pre-digital DBMS C) relational DBMS D) hierarchical DBMS
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C) relational DBMS
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Oracle Database Lite is a(n) A) DBMS for small handheld computing devices B) Internet DBMS C) mainframe relational DBMS D) DBMS for midrange computers.
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A) DBMS for small handheld computing devices.
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Microsoft SQL Server is a(n) A) DBMS for small handheld computing devices. B) Internet DBMS. B) Desktop relational DBMS. D) DBMS for midrange computers.
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D) DBMS for midrange computers.
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In a table for customers, the information about a single customer would reside in a single A) field B) row C) column D) table
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B) row
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In a relational database, a record is referred to in technical terms as a(n) A) tuple B) row C) entity D) field
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A) tuple
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A field identified in a table as holding the unique identifier of the table's records is called the A) primary key B) key field C) primary field D) unique ID
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A) primary key
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A field identified in a record as holding the unique identifier for that record is called the A) primary key B) key field C) primary field D) unique ID
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B) key field
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In a relational database, the three basic operations used to develop useful sets of data are A) select, project, and where B) select, join, and where C) select, project, and join D) select, from, and join
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C) select, project, and join
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The /select/ operation A) combines relational tables to provide the user with more information than is otherwise available. B) creates a subset of consisting of columns in a table. C) identifies the table from which the columns will be selected. D) creates a subset consisting of all records in the file that meet stated criteria.
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D) creates a subset consisting of all records in the file that meet stated criteria.
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The /join/ operation A) combines relational tables to provide the user with more information than is otherwise available. B) identifies the table from which the columns will be selected. C) creates a subset consisting of columns in a table. D) organizes elements in to segments
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A) combines relational tables to provide the user with more information than is otherwise available.
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The project operation A) combines relational tables to provide the user with more information than is otherwise available. B) creates a subset consisting of columns in a table. C) organizes elements into segments. D) identifies the table from which the columns will be selected
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B) creates a subset consisting of columns in a table.
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You are creating a video and animation sharing Web sit whose content will be supplied by content, video, and applets stored in a database and you anticipate very high loads on the server. Which of the following DBMSs will most likely serve your needs? A) object-relational DBMS B) relational DBMS C) hierarchical DBMS D) OODBMS
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A) object-relational DBMS
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The type of database management approach that can handle multimedia is the A) hierarchical DBMS B) relational DBMS C) network DBMS D) object-oriented DBMS
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D) object-oriented DBMS
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The data dictionary serves as an important data management tool by A) assigning attributes to the data B) creating an inventory of the data elements contained in the database. C) presenting data as end users or business specialists would perceive them D) maintaining data in updated form
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B) creating an inventory of the data elements contained in the database
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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 A) data dictionary B) data definition diagram C) entity-relationship diagram D) relationship dictionary
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A) data dictionary
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The specialized language programmers use to add and change data in the database is called A) a data access language B) a data manipulation language C) Structured Query Language D) a data definition language
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B) a data manipulation language
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The most prominent data manipulation language today is A) Access B) DB2 C) SQL D) Crystal Reports
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C) SQL
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DBMSs typically include report-generating tools in order to A) retrieve and display data B) display data in an easier-to-read format C) display data in graphs D) perform predictive analysis
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B) display data in an easier-to-read format
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The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called A) normalization B) data scrubbing C) data cleansing D) data defining
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A) normalization
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A schematic for the entire database that describes the relationships in a database is called a(n) A) data dictionary B) intersection relationship diagram C) entity-relationship diagram D) data definition diagram
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C) entity-relationship diagram
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A one-to-one relationship between two entities is symbolized in a diagram by a line that ends with A) two short marks B) one short mark C) a crow's foot D) a crow's foot topped by a short mark
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A) two short marks
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Which of the following is not one of the techniques used in Web mining? A) content mining B) structure mining C) usage mining D) user mining
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D) user mining
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You work for a retail chain whose primary outlets are in shopping mall and are conducting an analysis of your customers and their preferences. You wish to find out if there are any particular activities that your customers engage in, or the types of purchases made in the month before or after purchasing select items from your store. To do this, you will want to use the data mining software that is capable of. A) identifying associations B) identifying clusters C) identifying sequences D) classification
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C) identifying sequences
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You work for an national car rental agency and want to determine what characteristics are shared among your most loyal customers. To do this, you will want to use data mining software that is capable of A) identifying associations B) identifying clusters C) identifying sequences D) classification
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D) classification
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A data warehouse is composed of A) historical data from legacy systems B) current data C) internal and external data sources D) historic and current internal data
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D) historic and current internal data
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A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because A) a data mart typically focuses on a single subject area or line of business B) all the information is historical C) a data mart uses a Web interface D) all of the information belongs to a single company
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A) a data mart typically focuses on a single subject area or line of business
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Tools for analyzing data to help users find patterns, relationships, and insights and make better business decisions are known as A) DSS B) Business intelligence C) OLAP D) Data mining
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B) business intelligence
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The tool that enables users to view the same data in different ways using multiple dimensions is A) predictive analysis B) SQL C) OLAP D) data mining
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C) OLAP
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OLAP is a tool for enabling A) users to obtain online answers to ad-hoc questions in a rapid amount of time. B) users to view both logical and physical views of data C) programmers to quickly diagram data relationships D) programmers to normalize data.
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A) users to obtain online answers to ad-hoc questions in a rapid amount of time
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Data mining is a tool for allowing users to A) quickly compare transaction data gathered over many years. B) find hidden relationships in data. C) obtain online answers to ad hoc questions in a rapid amount of time. D) summarize massive amounts of data into much smaller, traditional reports.
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B) find hidden relationships in data
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In terms of data relationships, /associations/ refers to A) events linked over time B) patterns that describe a group to which an item belongs C) occurrences linked to a single event D) undiscovered groupings
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C) occurrences linked to a single event
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_____ tools are used to analyze large unstructured data sets, such as e-mail, memos, survey responses, etc., to discover patterns and relationships. A) OLAP B) Text mining C) Web mining D) Web content mining
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B) Text mining
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An alternative to using application server software for interfacing between a Web server and back-end databases is A) CGI B) HTML C) Java D) SQL
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A) CGI
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The organizations rules for sharing, disseminating, acquiring, standardizing, classifying, and inventorying information is called a(n) A) information policy B) data definition file C) data quality audit D) data governance policy
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A) information policy
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The special organizational function whose responsibilities include the technical and operational aspects of managing data, including physical database design and maintenance, is called A) data administration B) database administration C) information policy administration D) data auditing
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B) database administration
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Which common database challenge is illustrated by a person receiving multiple copies of an L.L. Bean catalog, each addressed to a slightly different variation of his or her full name? A) data normalization B) data accuracy C) data redundancy D) data inconsistency
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D) data inconsistency
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Detectign and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called A) data auditing B) defragmentation C) data scrubbing D) data optimization
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C) data scrubbing
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You are creating a database to store temperature and wind data from national airport locations. Which of the following field is the most likely candidate to use as the basis for a primary key in the airport table? A) address B) city C) airport code D) state
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C) airport code
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Data cleansing not only corrects errors but also A) establishes logical relationships between data B) structures data C) normalizes data D) enforces consistency among different sets of data
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D) enforces consistency among different sets of data
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Which of the following is not a method for performing a data quality audit? A) surveying entire data files B) surveying samples from data files C) surveying definition and query files D) surveying end users about their perceptions of data quality
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C) surveying data definition and query files
