Angel Perez
Quiz by , created more than 1 year ago

Nothing is impossible!

18
1
0
No tags specified
Angel Perez
Created by Angel Perez almost 8 years ago
Close

Escoge Cap 1 y 2

Escoge Cap 1 y 2

Question 1 of 66

1

Internet databases can store which types of data?

Select one of the following:

  • pictures

  • audio

  • text

  • video

  • all of the above

Explanation

Question 2 of 66

1

A program whose job is to store and retrieve user data in the database is called the __________.

Select one or more of the following:

  • Database Modeling System

  • Database Management System

  • Data Business Model System

  • Relational Model Manager

  • Data Business Management Service

Explanation

Question 3 of 66

1

Multi-user databases:

Select one or more of the following:

  • 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

Explanation

Question 4 of 66

1

The first applications of database technology were _______________.

Select one or more of the following:

  • Internet databases

  • workgroup databases

  • organizational databases

  • personal databases

  • file-processing systems

Explanation

Question 5 of 66

1

Which of the following is not a type of multi-user database?

Select one or more of the following:

  • Internet databases

  • workgroup databases

  • organizational databases

  • personal databases

  • both a and d

Explanation

Question 6 of 66

1

For database systems needing to support approximately 15 concurrent users within an organization, which type of database would be appropriate?

Select one or more of the following:

  • Internet database

  • workgroup database

  • organizational database

  • personal database

  • none of the above

Explanation

Question 7 of 66

1

Which of the following is not a characteristic of Internet databases?

Select one or more of the following:

  • 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

Explanation

Question 8 of 66

1

Which of the following is a technology that can be used in delivering data with an Internet database?

Select one or more of the following:

  • FTP

  • SMTP

  • XML

  • PTL

  • HTP

Explanation

Question 9 of 66

1

In a database application processing system:

Select one or more of the following:

  • 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

Explanation

Question 10 of 66

1

Which of the following is not a limitation of file-processing systems?

Select one or more of the following:

  • 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.

Explanation

Question 11 of 66

1

In a file-processing system:

Select one or more of the following:

  • the user interacts with the application

  • the user accesses the file data

  • the application accesses the file data

  • a and b

  • a and c

Explanation

Question 12 of 66

1

When data are duplicated, the most serious problem is:

Select one or more of the following:

  • 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

Explanation

Question 13 of 66

1

In file-processing systems, the physical file formats are:

Select one or more of the following:

  • contained in the metadata

  • contained in the application code

  • contained in the application metadata

  • contained in the DBMS

  • not needed by the application programs

Explanation

Question 14 of 66

1

In file-processing systems, the physical file formats are dependent on:

Select one or more of the following:

  • 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

Explanation

Question 15 of 66

1

As compared to file-processing systems, database processing systems:

Select one or more of the following:

  • 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

Explanation

Question 16 of 66

1

In database processing systems:

Select one or more of the following:

  • 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

Explanation

Question 17 of 66

1

A database is considered “self-describing” because:

Select one or more of the following:

  • 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

Explanation

Question 18 of 66

1

The description of the structure of a database is called:

Select one or more of the following:

  • user data

  • data dictionary

  • indexes

  • application metadata

  • application data

Explanation

Question 19 of 66

1

The standard hierarchy of data, from smallest to largest, is as follows:

Select one or more of the following:

  • 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

Explanation

Question 20 of 66

1

A database contains:

Select one or more of the following:

  • user data

  • metadata

  • indexes

  • application metadata

  • all of the above

Explanation

Question 21 of 66

1

An index is used to:

Select one or more of the following:

  • 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

Explanation

Question 22 of 66

1

An index can be used to:

Select one or more of the following:

  • 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

Explanation

Question 23 of 66

1

When the structure of a data entry form or a report is part of a database, it is called:

Select one or more of the following:

  • user data

  • metadata

  • indexes

  • application metadata

  • none of the above

Explanation

Question 24 of 66

1

A database is a model of:

Select one or more of the following:

  • 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

Explanation

Question 25 of 66

1

The principal criterion for determining the level of detail incorporated in a database is:

Select one or more of the following:

  • 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

Explanation

Question 26 of 66

1

Events that must be processed against the database are called _____________.

Select one or more of the following:

  • instances

  • dynamics

  • representations

  • referrals

  • transactions

Explanation

Question 27 of 66

1

Which of the following was not a factor in organizations’ interest in the initial development of database technology?

Select one or more of the following:

  • 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

Explanation

Question 28 of 66

1

Which of the following was not a disadvantage of early database technologies?

Select one or more of the following:

  • 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

Explanation

Question 29 of 66

1

Which of the following is not an advantage of the relational model?

Select one or more of the following:

  • 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

Explanation

Question 30 of 66

1

Modern microcomputer DBMS products:

Select one or more of the following:

  • 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

Explanation

Question 31 of 66

1

Client-server database architecture:

Select one or more of the following:

  • 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

Explanation

Question 32 of 66

1

The term “Internet database” refers to which of the following?

Select one or more of the following:

  • 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

Explanation

Question 33 of 66

1

Which of the following is not true about distributed databases?

Select one or more of the following:

  • 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.

Explanation

Question 34 of 66

1

Business organizations have resisted adopting object-oriented database systems because:

Select one or more of the following:

  • 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

Explanation

Question 35 of 66

1

A relation:

Select one or more of the following:

  • is a tree containing user data

  • is a table containing user data

  • contains records in columns

  • is always well structured

  • all of the above

Explanation

Question 36 of 66

1

A relation:

Select one or more of the following:

  • has columns containing attributes

  • has rows containing records

  • should contain information on only one topic

  • has columns containing fields

  • all of the above

Explanation

Question 37 of 66

1

The process to convert a poorly structured relation into a well-structured relation is called ________.

Select one or more of the following:

  • decomposition

  • structuration

  • transformation

  • transaction

  • normalization

Explanation

Question 38 of 66

1

Which of the following would not be stored in system tables?

Select one or more of the following:

  • user data

  • keys

  • stored procedures

  • lists of indexes

  • length of fields

Explanation

Question 39 of 66

1

Which of the following is (are) considered “overhead data”?

Select one or more of the following:

  • metadata

  • keys

  • linked lists

  • user data

  • application metadata

Explanation

Question 40 of 66

1

An index is a type of ____________.

Select one or more of the following:

  • database

  • metadata

  • stored procedure

  • overhead data

  • primary key

Explanation

Question 41 of 66

1

Indexes can:

Select one or more of the following:

  • 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

Explanation

Question 42 of 66

1

Application metadata can include the structure of all of the following except ______________.

Select one or more of the following:

  • indexes

  • forms

  • queries

  • reports

  • application components

Explanation

Question 43 of 66

1

The design tools subsystem of the DBMS usually provides ________________.

Select one or more of the following:

  • tools for backup and recovery of the database

  • one or more programming languages

  • a DBMS engine

  • a component to process queries

  • a banded report

Explanation

Question 44 of 66

1

The design tools subsystem of the DBMS typically includes tools for creating all of the following except ____________.

Select one or more of the following:

  • forms

  • tables

  • reports

  • queries

  • engines

Explanation

Question 45 of 66

1

Which DBMS subsystem is responsible for processing the application components?

Select one or more of the following:

  • DBMS engine

  • schema subsystem

  • run-time subsystem

  • design tools subsystem

  • programming interfaces

Explanation

Question 46 of 66

1

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?

Select one or more of the following:

  • DBMS engine

  • schema subsystem

  • run-time subsystem

  • design tools subsystem

  • programming interfaces

Explanation

Question 47 of 66

1

The DBMS engine is directly involved in all of the following except _____________.

Select one or more of the following:

  • locking

  • recovery

  • domains

  • backup

  • transaction management

Explanation

Question 48 of 66

1

The database schema defines which of the following?

Select one or more of the following:

  • domains

  • tables

  • relationships

  • business rules

  • all of the above

Explanation

Question 49 of 66

1

Which of the following steps in creating a database would come first?

Select one or more of the following:

  • define relationships

  • create tables

  • define the schema

  • generate the data entry form

  • format reports

Explanation

Question 50 of 66

1

The set of values that a column can have is called the ___________.

Select one or more of the following:

  • domain

  • business rules

  • schema

  • relation

  • uniqueness

Explanation

Question 51 of 66

1

Business rules may be enforced by all of the following methods except ____________.

Select one or more of the following:

  • by the DBMS

  • by the indexes

  • by stored procedures

  • by the application programs

  • all of the above can be used to enforce business rules

Explanation

Question 52 of 66

1

____________ are constraints on user activities that must be enforced no matter how the data changes reach the DBMS.

Select one or more of the following:

  • Domains

  • Business rules

  • Schema

  • Relationships

  • Keys

Explanation

Question 53 of 66

1

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.

Select one or more of the following:

  • primary key

  • secondary key

  • foreign key

  • duplicate key

  • surrogate key

Explanation

Question 54 of 66

1

Which of the following is not considered part of a database application?

Select one or more of the following:

  • tables

  • reports

  • application programs

  • forms

  • queries

Explanation

Question 55 of 66

1

In a database application, data entry is typically done with a(n) _____________.

Select one or more of the following:

  • report

  • metadata

  • query

  • form

  • table

Explanation

Question 56 of 66

1

A surrogate key:

Select one or more of the following:

  • 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

Explanation

Question 57 of 66

1

Which of the following is not a means of expressing a query to a database?

Select one or more of the following:

  • PBL

  • SQL

  • QBE

  • query by form

  • query by example

Explanation

Question 58 of 66

1

A report:

Select one or more of the following:

  • 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

Explanation

Question 59 of 66

1

Menus can be used to:

Select one or more of the following:

  • display database data

  • control the users’ activities

  • retrieve specific data from the database

  • update database data

  • express a query to the database

Explanation

Question 60 of 66

1

Application programs:

Select one or more of the following:

  • 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

Explanation

Question 61 of 66

1

Which of the following is not true of application programs?

Select one or more of the following:

  • 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

Explanation

Question 62 of 66

1

A prototype is:

Select one or more of the following:

  • 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

Explanation

Question 63 of 66

1

Which of the following is not a characteristic of top-down development?

Select one or more of the following:

  • 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

Explanation

Question 64 of 66

1

Which of the following is a characteristic of bottom-up development?

Select one or more of the following:

  • 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

Explanation

Question 65 of 66

1

Capturing the users’ requirements typically involves all of the following except:

Select one or more of the following:

  • making inferences

  • interviewing users

  • building prototypes

  • examining reports

  • all of the above

Explanation

Question 66 of 66

1

Data modeling in a multi-user system is complicated because:

Select one or more of the following:

  • 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

Explanation

Previous
Next