Upload
clyde-hudson
View
217
Download
0
Tags:
Embed Size (px)
Citation preview
1.1. file.file.
2.2. database.database.
3.3. entity.entity.
4.4. record.record.
5.5. attribute. attribute.
When working with a When working with a
database, a group of related database, a group of related
fields comprises a(n)…fields comprises a(n)…
1.1. file.file.
2.2. database.database.
3.3. entity.entity.
4.4. record.record.
5.5. attribute.attribute.
When working with a When working with a
database, a group of related database, a group of related
fields comprises a(n)…fields comprises a(n)…
Fields are groups of characters such as a word, group of words, Fields are groups of characters such as a word, group of words, or a complete number.or a complete number.
1.1. file.file.
2.2. database.database.
3.3. entity.entity.
4.4. field. field.
5.5. attribute.attribute.
A person, place, thing, or A person, place, thing, or
event on which we store event on which we store
and maintain information and maintain information
using records is a(n)…using records is a(n)…
1.1. file.file.
2.2. database.database.
3.3. entity.entity.
4.4. field.field.
5.5. attribute.attribute.
A person, place, thing, or A person, place, thing, or
event on which we store event on which we store
and maintain information and maintain information
using records is a(n)…using records is a(n)…
An entity can be a customer (person), retail store (place), order An entity can be a customer (person), retail store (place), order (thing), or holiday shopping season (event). (thing), or holiday shopping season (event).
1.1. secondary field.secondary field.
2.2. primary field.primary field.
3.3. key field.key field.
4.4. first field.first field.
5.5. customer field.customer field.
A field in each record A field in each record
that uniquely identifies that uniquely identifies
that record is called that record is called
a…a…
1.1. secondary field.secondary field.
2.2. primary field.primary field.
3.3. key field.key field.
4.4. first field.first field.
5.5. customer field.customer field.
A field in each record A field in each record
that uniquely identifies that uniquely identifies
that record is called a…that record is called a…
Every record in a file should contain at least one field that uniquely identifies that record so the record can be retrieved, updated, or sorted.
1.1. Data securityData security
2.2. Program-data dependenceProgram-data dependence
3.3. Data redundancyData redundancy
4.4. Easily sharing data Easily sharing data
5.5. Inflexibility Inflexibility
Which of the following Which of the following
is is notnot a problem with a problem with
the traditional file the traditional file
environment?environment?
1.1. Data securityData security
2.2. Program-data dependenceProgram-data dependence
3.3. Data redundancyData redundancy
4.4. Easily sharing data Easily sharing data
5.5. InflexibilityInflexibility
Which of the following Which of the following
is is notnot a problem with a problem with
the traditional file the traditional file
environment?environment?
In most organizations, systems tend to grow independently and not according to some grand plan. Over time, problems occur with data redundancy and inconsistency, program-data dependence, inflexibility, poor data security, and an inability to share data among applications.
1.1. Program-data dependenceProgram-data dependence
2.2. Data redundancy Data redundancy
3.3. Inflexible database retrievalInflexible database retrieval
4.4. Lack of data sharingLack of data sharing
5.5. Data inconsistencyData inconsistency
Which of the following Which of the following
occurs when the same occurs when the same
data are stored in more data are stored in more
than one place or than one place or
location?location?
1.1. Program-data dependenceProgram-data dependence
2.2. Data redundancyData redundancy
3.3. Inflexible database retrievalInflexible database retrieval
4.4. Lack of data sharingLack of data sharing
5.5. Data inconsistencyData inconsistency
Which of the following Which of the following
occurs when the same occurs when the same
data are stored in more data are stored in more
than one place or than one place or
location?location?
Data redundancy occurs when different divisions, functional areas, and groups in an organization independently collect the same piece of data and store it independently of each other.
1.1. Program-data dependenceProgram-data dependence
2.2. Data redundancy Data redundancy
3.3. Inflexible database Inflexible database retrievalretrieval
4.4. Lack of data sharingLack of data sharing
5.5. Data inconsistencyData inconsistency
Which of the following Which of the following
refers to the situation in refers to the situation in
which a change in a which a change in a
software program could software program could
require a change in the require a change in the
data used by that data used by that
program? program?
1.1. Program-data dependenceProgram-data dependence
2.2. Data redundancy Data redundancy
3.3. Inflexible database retrievalInflexible database retrieval
4.4. Lack of data sharingLack of data sharing
5.5. Data inconsistencyData inconsistency
Which of the following Which of the following
refers to the situation in refers to the situation in
which a change in a which a change in a
software program could software program could
require a change in the require a change in the
data used by that data used by that
program?program?
Program-data dependence refers to the coupling of data stored in files and the specific programs required to update and maintain those files such that changes in programs require changes to the data.
1.1. middleware.middleware.
2.2. shareware.shareware.
3.3. enterprise application software.enterprise application software.
4.4. database management system.database management system.
5.5. operating system.operating system.
The software that acts The software that acts
as an interface as an interface
between application between application
programs and the programs and the
physical data files is… physical data files is…
1.1. middleware.middleware.
2.2. shareware.shareware.
3.3. enterprise application software.enterprise application software.
4.4. database management system.database management system.
5.5. operating system.operating system.
The software that acts The software that acts
as an interface between as an interface between
application programs application programs
and the physical data and the physical data
files is…files is…
A database management system is simply the software that permits an organization to centralize data, manage them efficiently, and provide access to the stored data by application programs.
1.1. Conceptual schemaConceptual schema
2.2. Logical viewLogical view
3.3. Physical viewPhysical view
4.4. Physical schemaPhysical schema
5.5. Subschema Subschema
Which of the following Which of the following
refers to the presentation refers to the presentation
of data as they would be of data as they would be
perceived by end users?perceived by end users?
1.1. Conceptual schemaConceptual schema
2.2. Logical viewLogical view
3.3. Physical viewPhysical view
4.4. Physical schemaPhysical schema
5.5. SubschemaSubschema
Which of the following Which of the following
refers to the presentation refers to the presentation
of data as they would be of data as they would be
perceived by end users?perceived by end users?
The physical view of data shows how they are actually organized and structured on physical storage media.
1.1. conceptual schema.conceptual schema.
2.2. logical view.logical view.
3.3. physical view.physical view.
4.4. physical schema.physical schema.
5.5. subschema.subschema.
The logical description of The logical description of
the entire database the entire database
showing all the data showing all the data
elements and elements and
relationships among relationships among
them is called the …them is called the …
1.1. conceptual schema.conceptual schema.
2.2. logical view.logical view.
3.3. physical view.physical view.
4.4. physical schema.physical schema.
5.5. subschema.subschema.
The logical description of The logical description of
the entire database the entire database
showing all the data showing all the data
elements and elements and
relationships among them relationships among them
is called the …is called the …
The specifications of how data from the conceptual schema are stored on physical media is termed the physical schema or internal schema.
1.1. Enterprise applicationsEnterprise applications
2.2. Data definition languageData definition language
3.3. Data manipulation languageData manipulation language
4.4. Data dictionaryData dictionary
5.5. Not sureNot sure
Which of the following Which of the following
is is notnot a component of a a component of a
database management database management
system? system?
1.1. Enterprise applicationsEnterprise applications
2.2. Data definition languageData definition language
3.3. Data manipulation languageData manipulation language
4.4. Data dictionaryData dictionary
5.5. Not sureNot sure
Which of the following Which of the following
is is notnot a component of a a component of a
database management database management
system?system?
A database management system must have a data definition language, a data manipulation language, and a data dictionary.
1.1. data definition language.data definition language.
2.2. data manipulation language.data manipulation language.
3.3. data dictionary.data dictionary.
4.4. application program.application program.
5.5. Not sureNot sure
An automated file that An automated file that
stores definitions of data stores definitions of data
elements and data elements and data
characteristics is called characteristics is called
a(n)…a(n)…
1.1. data definition language.data definition language.
2.2. data manipulation language.data manipulation language.
3.3. data dictionary.data dictionary.
4.4. application program.application program.
5.5. Not sureNot sure
An automated file that An automated file that
stores definitions of data stores definitions of data
elements and data elements and data
characteristics is called characteristics is called
a(n)…a(n)…
The data dictionary can produce lists and reports of data use, groupings, and program locations.
1.1. HierarchicalHierarchical
2.2. TableTable
3.3. NetworkNetwork
4.4. RelationalRelational
5.5. Not sureNot sure
Which type of data model Which type of data model
represents all data in the represents all data in the
database as simple two-database as simple two-
dimensional tables?dimensional tables?
1.1. HierarchicalHierarchical
2.2. TableTable
3.3. NetworkNetwork
4.4. RelationalRelational
5.5. Not sureNot sure
Which type of data model Which type of data model
represents all data in the represents all data in the
database as simple two-database as simple two-
dimensional tables?dimensional tables?
The relational DBMS is the most popular type for PCs as well as for larger computers and mainframes.
1.1. SelectSelect
2.2. JoinJoin
3.3. ProjectProject
4.4. PrintPrint
5.5. Not sure Not sure
Which of the following is Which of the following is
notnot a basic operation in a a basic operation in a
relational database?relational database?
1.1. SelectSelect
2.2. JoinJoin
3.3. ProjectProject
4.4. PrintPrint
5.5. Not sureNot sure
Which of the following is Which of the following is
notnot a basic operation in a a basic operation in a
relational database?relational database?
The select operation creates a subset of all records that meet the stated criteria. The join operation combines relational tables. The project operation creates a subset of columns in a table, creating new tables that contain only the information required.
1.1. SmallSmall
2.2. StableStable
3.3. FlexibleFlexible
4.4. Adaptive Adaptive
5.5. Networked Networked
Which of the following is Which of the following is
not not a characteristic of a characteristic of
data structures that have data structures that have
been normalized? been normalized?
1.1. SmallSmall
2.2. StableStable
3.3. FlexibleFlexible
4.4. Adaptive Adaptive
5.5. NetworkedNetworked
Which of the following is Which of the following is
notnot a characteristic of a characteristic of
data structures that data structures that
have been normalized?have been normalized?
To use a relational database model effectively, complex groupings of data must be streamlined to minimize redundant data elements and awkward many-to-many relationships through the process of normalization.
1.1. mine.mine.
2.2. warehouse.warehouse.
3.3. store.store.
4.4. network.network.
5.5. crate.crate.
A database that stores A database that stores
current and historical current and historical
data of potential interest data of potential interest
to managers throughout to managers throughout
the company is called a the company is called a
data … data …
1.1. mine.mine.
2.2. warehouse.warehouse.
3.3. store.store.
4.4. network.network.
5.5. crate.crate.
A database that stores A database that stores
current and historical current and historical
data of potential interest data of potential interest
to managers throughout to managers throughout
the company is called a the company is called a
data …data …
The data stored in a data warehouse originate in many core operational systems and external sources. The data are standardized into a common data model and consolidated so that they can be used across the enterprise for management analysis and decision making.
1.1. Data miningData mining
2.2. Data warehousingData warehousing
3.3. Data storingData storing
4.4. Data networkingData networking
5.5. Data cratingData crating
Which of the following is Which of the following is
often used to provide often used to provide
information for targeted information for targeted
marketing campaigns?marketing campaigns?
1.1. Data miningData mining
2.2. Data warehousingData warehousing
3.3. Data storingData storing
4.4. Data networkingData networking
5.5. Data cratingData crating
Which of the following is Which of the following is
often used to provide often used to provide
information for targeted information for targeted
marketing campaigns?marketing campaigns?
Data mining uses a variety of techniques to find hidden patterns and relationships in large pools of data and infer rules from them that can be used to predict future behavior and guide decision making.
1.1. Structured Query LanguagesStructured Query Languages
2.2. Hypermedia databasesHypermedia databases
3.3. Ad-hoc query languagesAd-hoc query languages
4.4. Common gateway interfaceCommon gateway interface
5.5. Database serversDatabase servers
Which of the following Which of the following
allows users to access allows users to access
topics on a Web site in topics on a Web site in
whichever order they whichever order they
wish?wish?
1.1. Structured Query LanguagesStructured Query Languages
2.2. Hypermedia databasesHypermedia databases
3.3. Ad-hoc query languagesAd-hoc query languages
4.4. Common gateway interfaceCommon gateway interface
5.5. Database serversDatabase servers
Which of the following Which of the following
allows users to access allows users to access
topics on a Web site in topics on a Web site in
whichever order they whichever order they
wish?wish?
The hypermedia database approach to information management stores chunks of information in the form of nodes connected by links the user specifies. The nodes can contain text, graphics, sound, full-motion video, or executable computer programs.
1.1. SQL script.SQL script.
2.2. Data language script.Data language script.
3.3. Java script.Java script.
4.4. Access script.Access script.
5.5. Common gateway interface. Common gateway interface.
A specification for A specification for
transferring information transferring information
between a Web server between a Web server
and a program designed and a program designed
to accept and return data to accept and return data
is called …is called …
1.1. SQL script.SQL script.
2.2. Data language script.Data language script.
3.3. Java script.Java script.
4.4. Access script.Access script.
5.5. Common gateway interface.Common gateway interface.
A specification for A specification for
transferring information transferring information
between a Web server between a Web server
and a program designed and a program designed
to accept and return data to accept and return data
is called …is called …
Common gateway interfaces can be written in any programming language.
1.1. resource administration.resource administration.
2.2. data administration.data administration.
3.3. database administration.database administration.
4.4. Data-mining administration.Data-mining administration.
5.5. Not sureNot sure
An organizational An organizational
function with the power function with the power
to define information to define information
requirements for the requirements for the
entire company is called entire company is called
a…a…
1.1. resource administration.resource administration.
2.2. data administration.data administration.
3.3. database administration.database administration.
4.4. data-mining administration.data-mining administration.
5.5. Not sureNot sure
An organizational An organizational
function with the power function with the power
to define information to define information
requirements for the requirements for the
entire company is called entire company is called
a…a…
Data administration is responsible for the specific policies and procedures through which data can be managed as an organizational resource. The fundamental principle of data administration is that all data are the property of the organization as a whole.
1.1. resources administration.resources administration.
2.2. data administration.data administration.
3.3. database administration.database administration.
4.4. data-mining administration.data-mining administration.
5.5. Not sureNot sure
A database design and A database design and
management group management group
performs the functions of performs the functions of
… …
1.1. resources administration.resources administration.
2.2. data administration.data administration.
3.3. database administration.database administration.
4.4. data-mining administration.data-mining administration.
5.5. Not sureNot sure
A database design and A database design and
management group management group
performs the functions of performs the functions of
……
The database design and management group establishes the physical database, the logical relations among elements, and the access rules and procedures.