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Nothing is impossible!
Angel Perez
Quiz por Angel Perez, atualizado more than 1 year ago
Angel Perez
Criado por Angel Perez mais de 7 anos atrás
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Resumo de Recurso

Questão 1

Questão
Internet databases can store which types of data?
Responda
  • pictures
  • audio
  • text
  • video
  • all of the above

Questão 2

Questão
A program whose job is to store and retrieve user data in the database is called the __________.
Responda
  • Database Modeling System
  • Database Management System
  • Data Business Model System
  • Relational Model Manager
  • Data Business Management Service

Questão 3

Questão
Multi-user databases:
Responda
  • allow more than one concurrent user
  • must keep one user’s work from interfering with another’s
  • allow each user to make changes independently
  • both a and b
  • both a and c

Questão 4

Questão
The first applications of database technology were _______________.
Responda
  • Internet databases
  • workgroup databases
  • organizational databases
  • personal databases
  • file-processing systems

Questão 5

Questão
Which of the following is not a type of multi-user database?
Responda
  • Internet databases
  • workgroup databases
  • organizational databases
  • personal databases
  • both a and d

Questão 6

Questão
For database systems needing to support approximately 15 concurrent users within an organization, which type of database would be appropriate?
Responda
  • Internet database
  • workgroup database
  • organizational database
  • personal database
  • none of the above

Questão 7

Questão
Which of the following is not a characteristic of Internet databases?
Responda
  • can support no more than 50 concurrent users
  • contain structured data
  • contain nonstructured data
  • application content is delivered via a standard browser
  • uses web-oriented technology to transfer data

Questão 8

Questão
Which of the following is a technology that can be used in delivering data with an Internet database?
Responda
  • FTP
  • SMTP
  • XML
  • PTL
  • HTP

Questão 9

Questão
In a database application processing system:
Responda
  • the database application(s) interact(s) with the DBMS
  • the database application(s) access(es) the database data
  • the DBMS accesses the database data
  • a and b
  • a and c

Questão 10

Questão
Which of the following is not a limitation of file-processing systems?
Responda
  • Much data is duplicated.
  • Data integrity is high.
  • Application programs are dependent on file formats.
  • Data are separated and isolated.
  • All of the above are limitations of file-processing systems.

Questão 11

Questão
In a file-processing system:
Responda
  • the user interacts with the application
  • the user accesses the file data
  • the application accesses the file data
  • a and b
  • a and c

Questão 12

Questão
When data are duplicated, the most serious problem is:
Responda
  • storage space is wasted
  • data may be in different formats
  • the data may not be logically consistent
  • the files may be of different sizes
  • difficulty in representing the users’ perspectives

Questão 13

Questão
In file-processing systems, the physical file formats are:
Responda
  • contained in the metadata
  • contained in the application code
  • contained in the application metadata
  • contained in the DBMS
  • not needed by the application programs

Questão 14

Questão
In file-processing systems, the physical file formats are dependent on:
Responda
  • the language or product used to generate them
  • the type of data being stored
  • the DBMS
  • the size of the file
  • the user’s preference

Questão 15

Questão
As compared to file-processing systems, database processing systems:
Responda
  • make application programming easier
  • maximize the impact of data format changes on application programs
  • provide users with direct access to data
  • both a and c
  • none of the above

Questão 16

Questão
In database processing systems:
Responda
  • all record formats are stored in the database
  • application programs need not include the format of the records or files they process
  • application programs need to know the length and data type of the data items they need from the database
  • the impact of data format changes on application programs is minimized
  • all of the above

Questão 17

Questão
A database is considered “self-describing” because:
Responda
  • all the users’ data is in one place
  • it reduces data duplication
  • it contains a description of its own structure
  • it contains a listing of all the programs that use it
  • all of the above

Questão 18

Questão
The description of the structure of a database is called:
Responda
  • user data
  • data dictionary
  • indexes
  • application metadata
  • application data

Questão 19

Questão
The standard hierarchy of data, from smallest to largest, is as follows:
Responda
  • bytes, characters, fields, records, files
  • bits, characters, fields, records, files
  • bits, characters, fields, files, records
  • bits, characters, records, databases, files
  • bits, characters, fields, files, databases

Questão 20

Questão
A database contains:
Responda
  • user data
  • metadata
  • indexes
  • application metadata
  • all of the above

Questão 21

Questão
An index is used to:
Responda
  • represent relationships among the data
  • describe the structure of the database itself
  • describe the application programs that use the database
  • describe the structure of a data entry form or report
  • a and c

Questão 22

Questão
An index can be used to:
Responda
  • document the structure of the database itself
  • improve the performance of the database
  • reduce data dependency for application programs
  • better represent the users’ perspectives of the data
  • all of the above

Questão 23

Questão
When the structure of a data entry form or a report is part of a database, it is called:
Responda
  • user data
  • metadata
  • indexes
  • application metadata
  • none of the above

Questão 24

Questão
A database is a model of:
Responda
  • the actual business
  • the users’ model of the business
  • the programmers’ view of the business
  • reality as it relates to the business
  • all of the above

Questão 25

Questão
The principal criterion for determining the level of detail incorporated in a database is:
Responda
  • the number of sample forms available during the design process
  • the level of detail of the structure of the database
  • the level of detail that exists in the users’ minds
  • the degree of detail available in the metadata
  • none of the above

Questão 26

Questão
Events that must be processed against the database are called _____________.
Responda
  • instances
  • dynamics
  • representations
  • referrals
  • transactions

Questão 27

Questão
Which of the following was not a factor in organizations’ interest in the initial development of database technology?
Responda
  • organizations were producing data at phenomenal rates
  • data was difficult to manage with file-processing systems
  • new systems were becoming increasingly difficult to develop
  • the desire to separate and isolate data according to application programs
  • the desire to integrate data from different file systems

Questão 28

Questão
Which of the following was not a disadvantage of early database technologies?
Responda
  • inability to integrate data
  • database applications were unreliable
  • database application performance was slow
  • vulnerability of having a single point of failure for all data
  • b and c

Questão 29

Questão
Which of the following is not an advantage of the relational model?
Responda
  • data duplication is minimized
  • many processing errors can be eliminated
  • most users can obtain information from the database themselves
  • provides a standard way for specialists to structure and process databases
  • all of the above are advantages of the relational model

Questão 30

Questão
Modern microcomputer DBMS products:
Responda
  • are not truly relational
  • provide easy to use interfaces
  • have poor response time
  • are not true DBMS products
  • are really just programming languages with generalized file-processing capabilities

Questão 31

Questão
Client-server database architecture:
Responda
  • has one CPU involved in the processing of database applications
  • has many CPUs simultaneously involved in processing database applications
  • is a simple but less robust mode of database processing on a LAN
  • is the same as the multi-user architecture used on mainframe databases
  • both a and d

Questão 32

Questão
The term “Internet database” refers to which of the following?
Responda
  • any database joined with Internet technology to publish database data on the web
  • any database that uses HTTP to publish database data to any location
  • any database joined with XML to publish database data to any location
  • any database joined with DHTML and XML to publish database data to any location
  • all of the above

Questão 33

Questão
Which of the following is not true about distributed databases?
Responda
  • They can combine personal, workgroup, and organizational databases.
  • They are widely used by large international corporations.
  • They make it appear to each user that (s)he is the only user of the organizations’ data.
  • They are still dealing with issues of data security.
  • It is still unknown if truly distributed databases can meet the needs of day-to-day organizational processing.

Questão 34

Questão
Business organizations have resisted adopting object-oriented database systems because:
Responda
  • object-oriented programming uses simplified data structures that fit easily into relational databases
  • the cost of purchasing ODBMS packages is prohibitively high
  • the cost and risk of converting from relational databases to OBMS format is too high
  • most ODBMS products lack features and functions for business information applications
  • both c and d

Questão 35

Questão
A relation:
Responda
  • is a tree containing user data
  • is a table containing user data
  • contains records in columns
  • is always well structured
  • all of the above

Questão 36

Questão
A relation:
Responda
  • has columns containing attributes
  • has rows containing records
  • should contain information on only one topic
  • has columns containing fields
  • all of the above

Questão 37

Questão
The process to convert a poorly structured relation into a well-structured relation is called ________.
Responda
  • decomposition
  • structuration
  • transformation
  • transaction
  • normalization

Questão 38

Questão
Which of the following would not be stored in system tables?
Responda
  • user data
  • keys
  • stored procedures
  • lists of indexes
  • length of fields

Questão 39

Questão
Which of the following is (are) considered “overhead data”?
Responda
  • metadata
  • keys
  • linked lists
  • user data
  • application metadata

Questão 40

Questão
An index is a type of ____________.
Responda
  • database
  • metadata
  • stored procedure
  • overhead data
  • primary key

Questão 41

Questão
Indexes can:
Responda
  • assist in search operations
  • improve performance of sorting operations
  • slow performance of update operations
  • improve the accessibility of the database data
  • all of the above

Questão 42

Questão
Application metadata can include the structure of all of the following except ______________.
Responda
  • indexes
  • forms
  • queries
  • reports
  • application components

Questão 43

Questão
The design tools subsystem of the DBMS usually provides ________________.
Responda
  • tools for backup and recovery of the database
  • one or more programming languages
  • a DBMS engine
  • a component to process queries
  • a banded report

Questão 44

Questão
The design tools subsystem of the DBMS typically includes tools for creating all of the following except ____________.
Responda
  • forms
  • tables
  • reports
  • queries
  • engines

Questão 45

Questão
Which DBMS subsystem is responsible for processing the application components?
Responda
  • DBMS engine
  • schema subsystem
  • run-time subsystem
  • design tools subsystem
  • programming interfaces

Questão 46

Questão
Which DBMS subsystem is responsible for receiving requests from the other components and translating them into commands for the operating system to read or write data on the physical media?
Responda
  • DBMS engine
  • schema subsystem
  • run-time subsystem
  • design tools subsystem
  • programming interfaces

Questão 47

Questão
The DBMS engine is directly involved in all of the following except _____________.
Responda
  • locking
  • recovery
  • domains
  • backup
  • transaction management

Questão 48

Questão
The database schema defines which of the following?
Responda
  • domains
  • tables
  • relationships
  • business rules
  • all of the above

Questão 49

Questão
Which of the following steps in creating a database would come first?
Responda
  • define relationships
  • create tables
  • define the schema
  • generate the data entry form
  • format reports

Questão 50

Questão
The set of values that a column can have is called the ___________.
Responda
  • domain
  • business rules
  • schema
  • relation
  • uniqueness

Questão 51

Questão
Business rules may be enforced by all of the following methods except ____________.
Responda
  • by the DBMS
  • by the indexes
  • by stored procedures
  • by the application programs
  • all of the above can be used to enforce business rules

Questão 52

Questão
____________ are constraints on user activities that must be enforced no matter how the data changes reach the DBMS.
Responda
  • Domains
  • Business rules
  • Schema
  • Relationships
  • Keys

Questão 53

Questão
When the primary key of one relation is placed into a second relation to define a relationship, the key is called a(n) ___________ in the second relation.
Responda
  • primary key
  • secondary key
  • foreign key
  • duplicate key
  • surrogate key

Questão 54

Questão
Which of the following is not considered part of a database application?
Responda
  • tables
  • reports
  • application programs
  • forms
  • queries

Questão 55

Questão
In a database application, data entry is typically done with a(n) _____________.
Responda
  • report
  • metadata
  • query
  • form
  • table

Questão 56

Questão
A surrogate key:
Responda
  • represents an attribute of an entity in the users’ model
  • always appears as the first line of a banded report
  • can be used in queries, but not in tables
  • has no meaning to the users
  • all of the above

Questão 57

Questão
Which of the following is not a means of expressing a query to a database?
Responda
  • PBL
  • SQL
  • QBE
  • query by form
  • query by example

Questão 58

Questão
A report:
Responda
  • can be easier to design than a form since it is used only for displaying data
  • can be more difficult to design than a form because it usually has a more complex structure
  • is a formatted display of database data
  • both a and c
  • all of the above

Questão 59

Questão
Menus can be used to:
Responda
  • display database data
  • control the users’ activities
  • retrieve specific data from the database
  • update database data
  • express a query to the database

Questão 60

Questão
Application programs:
Responda
  • must be written in a language specific to the DBMS being used
  • can be used to enforce business rules
  • can use a predefined program interface to bypass the DBMS and access data directly
  • can not be written in standard programming languages
  • all of the above

Questão 61

Questão
Which of the following is not true of application programs?
Responda
  • may be written in a language specific to the DBMS being used
  • may be written in a standard programming language using a predefined program interface
  • may enforce business rules
  • interact with the DBMS to access database data
  • are always dependent on a set of forms and reports

Questão 62

Questão
A prototype is:
Responda
  • a completed database without any applications
  • a completed application without any database
  • created by the users to explain their model to the developers
  • a sample database and applications to represent aspects of the system
  • used only with top-down development

Questão 63

Questão
Which of the following is not a characteristic of top-down development?
Responda
  • involves a study of strategic goals
  • creates an abstract data model
  • identifies a number of systems to eventually be built
  • produces systems requiring little modification to interface with new systems
  • produces useful systems quickly

Questão 64

Questão
Which of the following is a characteristic of bottom-up development?
Responda
  • involves a study of strategic goals
  • begins with the need to develop a specific system
  • identifies a number of systems to eventually be built
  • produces systems requiring little modification to interface with new systems
  • often leads to analysis paralysis

Questão 65

Questão
Capturing the users’ requirements typically involves all of the following except:
Responda
  • making inferences
  • interviewing users
  • building prototypes
  • examining reports
  • all of the above

Questão 66

Questão
Data modeling in a multi-user system is complicated because:
Responda
  • conflicting models must be reconciled
  • no single user’s model includes the complete structure
  • the developers must document the logical union of different models
  • users’ models may be inconsistent with each other
  • all of the above

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