DBA 110 Final study guide

A DBMS lets you assign users to ____.

Answer

Selected Answer:

attributes

Correct Answer:

groups

Question 2

2.5 out of 2.5 points

A(n) ____ frees programmers who write database access programs from having to engage in mundane data manipulation activities, such as adding new data and deleting existing data.

Answer

Selected Answer:

DBMS

Correct Answer:

DBMS

Question 3


A(n) ____ is a person, place, object, event, or idea for which you want to store and process data.

Answer

Selected Answer:

entity

Correct Answer:

entity

Question 4


A visual way to represent a database is with a(n) ____.

Answer

Selected Answer:

entity-relationship diagram

Correct Answer:

entity-relationship diagram

Question 5


During the ____ process, a database expert determines the structure of the required database.

Answer

Selected Answer:

database design

Correct Answer:

database design

Question 6


One disadvantage of a database system is ____.

Answer

Selected Answer:

a larger file size

Correct Answer:

a larger file size

Question 7


The ____ of an entity become the columns in the database table.

Answer

Selected Answer:

attributes

Correct Answer:

attributes

Question 8


An association between entities is known as a(n) ____.

Answer

Selected Answer:

relationship

Correct Answer:

relationship

Question 9


Popular ____ include Access, Oracle, DB2, MySQL, and SQL Server.

Answer

Selected Answer:

DBMSs

Correct Answer:

DBMSs

Question 10


Storing the same data in more than one place is called ____.

Answer

Selected Answer:

redundancy

Correct Answer:

redundancy

Tuesday, September 6, 2011 2:28:42 PM EDT

OK

Question 1


Two tables are considered to be ____ compatible if they have the same number of columns and their corresponding columns represent the same type of data.

Answer

false

Selected Answer:

union

Correct Answer:

union

Question 2


The product of two tables is also called the ____ product.

Answer

Selected Answer:

Cartesian

Correct Answer:

Cartesian

Question 3


Using the product operator, if table A has 4 rows and table B has 4 rows, the number of rows in the product of these two tables is ____.

Answer

Selected Answer:

16

Correct Answer:

16

Question 4


Rows are also called ____.

Answer

Selected Answer:

tuples

Correct Answer:

tuples

Question 5


You can restrict the output from a join to include only certain columns by using the ____ command.

Answer

Selected Answer:

PROJECT

Correct Answer:

PROJECT

Question 6

0 out of 2.5 points

A query that changes data is a(n) ____ query.

Answer

Selected Answer:

update

Correct Answer:

update

Question 7


When duplicate column names exist in a database and you need to indicate the column to which you are referring, ____.

Answer

Selected Answer:

write both the table name and the column name, separated by a period

Correct Answer:

write both the table name and the column name, separated by a period

Question 8


The ____ key of a table is the column or collection of columns that uniquely identifies a given row in that table.

Answer

Selected Answer:

primary

Correct Answer:

primary

Question 9


The compound criteria (conditions) are created by using ____.

Answer

Selected Answer:

AND or OR

Correct Answer:

AND or OR

Question 10


Count, Sum, Avg, Max, and Min are a few of the built-in statistics or ____ functions that can be used in a query.

Answer

Selected Answer:

aggregate

Correct Answer:

aggregate


OK


Storing the same data in more than one place is called ____.

Answer

Selected Answer:

redundancy

Correct Answer:

redundancy

Question 2


Popular ____ include Access, Oracle, DB2, MySQL, and SQL Server.

Answer

Selected Answer:

DBMSs

Correct Answer:

DBMSs

Question 3


A(n) ____ frees programmers who write database access programs from having to engage in mundane data manipulation activities, such as adding new data and deleting existing data.

Answer

Selected Answer:

DBMS

Correct Answer:

DBMS

Question 4


A(n) ____ is the computer counterpart to an ordinary paper file you might keep in a file cabinet or an accounting ledger.

Answer

Selected Answer:

data file

Correct Answer:

data file

Question 5


A good ____ should provide an opportunity for users to incorporate integrity constraints when they design the database.

Answer

Selected Answer:

DBMS

Correct Answer:

DBMS

Question 6


A database has ____ if the data in it satisfies all established integrity constraints.

Answer

Selected Answer:

integrity

Correct Answer:

integrity

Question 7


Which of the following statements is correct?

Answer

Selected Answer:

In a nondatabase, file-oriented environment, data is often partitioned into several disjointed systems with each system having its own collection of files.

Correct Answer:

In a nondatabase, file-oriented environment, data is often partitioned into several disjointed systems with each system having its own collection of files.

Question 8


An association between entities is known as a(n) ____.

Answer

Selected Answer:

relationship

Correct Answer:

relationship

Question 9


____ are screen objects used to maintain, view, and print data from a database.

Answer

Selected Answer:

Forms

Correct Answer:

Forms

Question 10


During the ____ process, a database expert determines the structure of the required database.

Answer

Selected Answer:

database design

Correct Answer:

database design

Wednesday, September 7, 2011 2:00:08 PM EDT

OK

Question 1


Two tables are considered to be ____ compatible if they have the same number of columns and their corresponding columns represent the same type of data.

Answer

Selected Answer:

union

Correct Answer:

union

Question 2


If you are sorting records by more than one field, the more important field is called the ____.

Answer

Selected Answer:

primary sort key

Correct Answer:

primary sort key

Question 3


Based on the Customer table below, which command lists all information from the table concerning customer 524?CustomerNum CustomerName Street City State Zip 462 Bargains Galore 3829 Central Grove FL 33321524 Kline’s 838 Ridgeland Filmore FL 33336

Answer

Selected Answer:

SELECT Customer WHERE CustomerNum=524 GIVING Answer

Correct Answer:

SELECT Customer WHERE CustomerNum=524 GIVING Answer

Question 4


You can restrict the output from a join to include only certain columns by using the ____ command.

Answer

Selected Answer:

PROJECT

Correct Answer:

PROJECT

Question 5


The product of two tables is also called the ____ product.

Answer

Selected Answer:

Cartesian

Correct Answer:

Cartesian

Question 6

0 out of 2.5 points

The ____ command within relational algebra takes a vertical subset of a table.

Answer

Selected Answer:

SELECT

Correct Answer:

PROJECT

Question 7


The ____ key of a table is the column or collection of columns that uniquely identifies a given row in that table.

Answer

Selected Answer:

primary

Correct Answer:

primary

Question 8


The ____ operator is performed by the SUBTRACT command in relational algebra.

Answer

Selected Answer:

difference

Correct Answer:

difference

Question 9


A ____ query creates a new table using the query results.

Answer

Selected Answer:

make-table

Correct Answer:

make-table

Question 10

0 out of 2.5 points

The ____ operator is used to concatenate every row in the first table with every row in the second table.

Answer

Selected Answer:

union

Correct Answer:

product

Wednesday, September 7, 2011 2:40:15 PM EDT

OK

Question 1


When you use a name containing a space in Access SQL, you must ____.

Answer

Selected Answer:

enclose it in square brackets

Correct Answer:

enclose it in square brackets

Question 2


When rows are grouped, ____.

Answer

Selected Answer:

one line of output is produced for each group

Correct Answer:

one line of output is produced for each group

Question 3

0 out of 2.5 points

Customer ( CustomerNum, CustomerName, Street, City, State, Zip, Balance, CreditLimit, RepNum )

Based on the code above, list the number, name, and balance of all customers with balances greater than or equal to $1,000 and less than or equal to $5,000.

Answer

Selected Answer:

SELECT CustomerName, Balance FROM Customer WHERE Balance BETWEEN 1000 AND 5000 ;

Correct Answer:

SELECT CustomerNum, CustomerName, Balance FROM Customer WHERE Balance BETWEEN 1000 AND 5000 ;

Question 4



Based on the code above, list the number, name, street, and credit limit of all customers. Order the customers by name within descending credit limit.

Answer

Selected Answer:

SELECT CustomerNum, CustomerName, Street, CreditLimit FROM Customer ORDER BY CreditLimit DESC, CustomerName ;

Correct Answer:


Question 5


The basic form of an SQL retrieval command is ____.

Answer

Selected Answer:

SELECT-FROM-WHERE

Correct Answer:

SELECT-FROM-WHERE

Question 6

0 out of 2.5 points

You can save the results of a query as a table by including the ____ clause in the query.

Answer

Selected Answer:

UPDATE

Correct Answer:

INTO

Question 7


Student (StudentID, FirstName, LastName, Street, City, State, Zip)

Based on the code above, list the complete student table.

Answer

Selected Answer:

SELECT * FROM Student ;

Correct Answer:

SELECT * FROM Student ;

Question 8



Based on the code above, list the number, name, and available credit for all customers with credit limits that exceed their balances.

Answer

Selected Answer:

SELECT CustomerNum, CustomerName, CreditLimit-Balance AS AvailableCredit FROM Customer WHERE CreditLimit>Balance ;

Correct Answer:

SELECT CustomerNum, CustomerName, CreditLimit-Balance AS AvailableCredit FROM Customer WHERE CreditLimit>Balance ;

Question 9


When used after the word SELECT, the ____ symbol indicates that you want to include all fields in the query results in the order in which you described them to the DBMS when you created the table.

Answer

Selected Answer:

*

Correct Answer:

*

Question 10


In MySQL, the ____ is used as a wildcard to represent any collection of characters.

Answer

Selected Answer:

percent sign (%)

Correct Answer:

percent sign (%)


OK

Question 1


When used after the word SELECT, the ____ symbol indicates that you want to include all fields in the query results in the order in which you described them to the DBMS when you created the table.

Answer

Selected Answer:

*

Correct Answer:

*

Question 2


Part (PartNum, Description, OnHand, Class, Warehouse, Price )

Based on the code above, list the descriptions of all parts that are not in Warehouse 3.

Answer

Selected Answer:

SELECT Description FROM Part WHERE NOT Warehouse=’3’ ;

Correct Answer:

SELECT Description FROM Part WHERE NOT Warehouse=’3’ ;

Question 3


Many versions of SQL require you to end a command with a ____.

Answer

Selected Answer:

semicolon (;)

Correct Answer:

semicolon (;)

Question 4



Based on the code above, list the number, name, and complete address of every customer located on a street that contains the letters “Oxford”.

Answer

Selected Answer:

SELECT CustomerNum, CustomerName, Street, City, State, Zip FROM Customer WHERE Street LIKE “%Oxford%” ;

Correct Answer:

SELECT CustomerNum, CustomerName, Street, City, State, Zip FROM

Customer WHERE Street LIKE “%Oxford%” ;

Question 5


Part (PartNum, Description, OnHand, Class, Warehouse, Price )

Based on the code above, find how many parts are in item class HW.

Answer

Selected Answer:

SELECT COUNT(*) FROM Part WHERE Class=’HW’ ;

Correct Answer:

SELECT COUNT(*) FROM Part WHERE Class=’HW’ ;

Question 6


You can save the results of a query as a table by including the ____ clause in the query.

Answer

Selected Answer:

INTO

Correct Answer:

INTO

Question 7


To add new data to a table, use the ____ command.

Answer

Selected Answer:

INSERT

Correct Answer:

INSERT

Question 8



Based on the code above, list the number, name, street, and credit limit of all customers. Order the customers by name within descending credit limit.

Answer

Selected Answer:


Correct Answer:


Question 9


To use a wildcard, include the ____ operator in the WHERE clause.

Answer

Selected Answer:

LIKE

Correct Answer:

LIKE

Question 10


Student (StudentID, FirstName, LastName, Street, City, State, Zip)

Based on the code above, find the name of the student whose ID is 1167.

Answer

Selected Answer:

SELECT FirstName, LastName FROM Student WHERE StudentID=’1167’ ;

Correct Answer:

SELECT FirstName, LastName FROM Student WHERE StudentID=’1167’ ;


OK

0 out of 2.5 points

The statement, ____, removes the table LargeCust from a DBMS.

Answer

Selected Answer:

DELETE TABLE LargeCust ;

Correct Answer:

DROP TABLE LargeCust ;

Question 2


The CHECK clause can be included in the ____ command.

Answer

Selected Answer:

CREATE TABLE

Correct Answer:

CREATE TABLE

Question 3


In SQL, you use the CHECK clause to enforce ____ integrity.

Answer

Selected Answer:

legal-values

Correct Answer:

legal-values

Question 4


A(n) ____ is an action that occurs automatically in response to an associated database operation such as an INSERT, UPDATE, or DELETE command.

Answer

Selected Answer:

trigger

Correct Answer:

trigger

Question 5

0 out of 2.5 points

To create the primary key clause for the Orders table on the OrderNum and PartNum fields, the correct statement is ____.

Answer

Selected Answer:

PRIMARY KEY (Orders, OrderNum, PartNum)

Correct Answer:

PRIMARY KEY (OrderNum, PartNum)

Question 6


To create an index for the Customer table named RepBal with the keys RepNum and Balance and with the balances listed in descending order, the command is ____.

Answer

Selected Answer:

CREATE INDEX RepBal ON Customer (RepNum, Balance DESC) ;

Correct Answer:


Question 7


The ____ statement will take away user privileges to the database.

Answer

Selected Answer:

REVOKE

Correct Answer:

REVOKE

Question 8


To use a stored procedure in MySQL, a user enters the word _____ followed by the procedure name.

Answer

Selected Answer:

CALL

Correct Answer:

CALL

Question 9


Essentially, setting the value in a given field to ____ is similar to not entering a value in it at all.

Answer

Selected Answer:

null

Correct Answer:

null

Question 10


A trigger is stored and compiled on the ____.

Answer

Selected Answer:

server

Correct Answer:

server

Friday, September 23, 2011 5:29:48 AM EDT

OK


To create an index for the Customer table named RepBal with the keys RepNum and Balance and with the balances listed in descending order, the command is ____.

Answer

Selected Answer:


Correct Answer:


Question 2


The statement, ____, removes the table LargeCust from a DBMS.

Answer

Selected Answer:


Correct Answer:


Question 3


If you anticipate running a particular query often, you can improve overall performance by saving the query in a special file called a(n) ____.

Answer

Selected Answer:

stored procedure

Correct Answer:

stored procedure

Question 4


In Access, many macro actions require additional information, called _____ to complete the action.

Answer

Selected Answer:

arguments

Correct Answer:

arguments

Question 5


In SQL, you use the CHECK clause to enforce ____ integrity.

Answer

Selected Answer:

legal-values

Correct Answer:

legal-values

Question 6


To use a stored procedure in MySQL, a user enters the word _____ followed by the procedure name.

Answer

Selected Answer:

CALL

Correct Answer:

CALL

Question 7


The CHECK clause can be included in the ____ command.

Answer

Selected Answer:

CREATE TABLE

Correct Answer:

CREATE TABLE

Question 8


The SQL command for deleting the Warehouse field from the Part table is ____.

Answer

Selected Answer:

ALTER TABLE Part DROP COLUMN Warehouse ;

Correct Answer:

ALTER TABLE Part DROP COLUMN Warehouse ;

Question 9


In MySQL, you use the _____ command to produce a list of tables.

Answer

Selected Answer:

SHOW TABLES

Correct Answer:

SHOW TABLES

Question 10


To insert a new field in a table, the ____ keyword should be used with the ALTER TABLE command.

Answer

Selected Answer:

ADD

Correct Answer:

ADD

Friday, September 23, 2011 6:02:12 AM EDT

OK


From all the ____ keys, one is chosen to be the primary key.

Answer

Selected Answer:

candidate

Correct Answer:

candidate

Question 2

0 out of 2.5 points

Second normal form can be defined as a table that is in first normal form but that contains no ____.

Answer

Selected Answer:

nonkey columns

Correct Answer:

partial dependencies

Question 3


A table is in first normal form if it does not contain ____.

Answer

Selected Answer:

repeating groups

Correct Answer:

repeating groups

Question 4


An alternate key is a ____.

Answer

Selected Answer:

column that could be a primary key but was not chosen

Correct Answer:

column that could be a primary key but was not chosen

Question 5


A(n) ____ is a column or collection of columns on which all columns in the table are functionally dependent.

Answer

Selected Answer:

candidate key

Correct Answer:

candidate key

Question 6


Potential problems in the design of a relational database are known as ____.

Answer

Selected Answer:

update anomalies

Correct Answer:

update anomalies

Question 7


If there is more than one possible choice for the primary key, and one of the possibilities is chosen to be the primary key, the other choices are referred to as ____.

Answer

Selected Answer:

alternate keys

Correct Answer:

alternate keys

Question 8


The fact that column B is functionally dependent on column A can be written as ____.

Answer

Selected Answer:

A ® B

Correct Answer:

A ® B

Question 9


If B (an attribute) is functionally dependent on A, we can also say that ____.

Answer

Selected Answer:

A functionally determines B

Correct Answer:


Question 10


A column is a nonkey column if it is ____.

Answer

Selected Answer:

not a part of the primary key

Correct Answer:

not a part of the primary key

Friday, October 7, 2011 3:32:10 AM EDT

OK

You will only be allowed 2 attempts to take this Quiz.

Question 1


A table is in fourth normal form when it is in third normal form and there are no ____.

Answer

Selected Answer:

multivalued dependencies

false

Correct Answer:

multivalued dependencies

Question 2


If there is more than one possible choice for the primary key, and one of the possibilities is chosen to be the primary key, the other choices are referred to as ____.

Answer

Selected Answer:

alternate keys

Correct Answer:

alternate keys

Question 3


Another name for a nonkey column is a ____.

Answer

Selected Answer:

nonkey attribute

Correct Answer:

nonkey attribute

Question 4


From all the ____ keys, one is chosen to be the primary key.

Answer

Selected Answer:

candidate

Correct Answer:

candidate

Question 5


____ contains a repeating group.

Answer

Selected Answer:

Orders (OrderNum, OrderDate, (PartNum, NumOrdered) )

Correct Answer:

Orders (OrderNum, OrderDate, (PartNum, NumOrdered) )

Question 6


Potential problems in the design of a relational database are known as ____.

Answer

Selected Answer:

update anomalies

Correct Answer:

update anomalies

Question 7


If B (an attribute) is functionally dependent on A, we can also say that ____.

Answer

Selected Answer:


Correct Answer:


Question 8


____ normal form has an additional condition that the only determinants the table contains are candidate keys.

Answer

Selected Answer:

Third

Correct Answer:

Third

Question 9


A table that contains a repeating group is called a(n) ____.

Answer

Selected Answer:

unnormalized relation

Correct Answer:

unnormalized relation

Question 10


A(n) ____ is a column or collection of columns on which all columns in the table are functionally dependent.

Answer

Selected Answer:

candidate key

Correct Answer:

candidate key


OK

0 out of 2.5 points

When designing a database, you might find it helpful to design a(n) ____ to obtain the required information from users.

Answer

Selected Answer:

E-R diagram

Correct Answer:

survey form

Question 2


Independent entities have ____ in an E-R diagram.

Answer

Selected

Answer: square corners

Correct Answer:

square corners

Question 3

0 out of 2.5 points

In IDEF1X, the ____ is the symbol for category.

Answer

Selected Answer:

rectangle

Correct Answer:

circle

Question 4


A subtype is also called a(n) ____ in IDEF1X terminology.

Answer

Selected Answer:

category

Correct Answer:

category

Question 5


A(n) ____ is a primary key that consists of a column that uniquely identifies an entity, such as a person’s Social Security number.

Answer

Selected Answer:

natural key

Correct Answer:

natural key

Question 6


When a DBMS creates a(n) ____ key, it is usually an automatic numbering data type, such as the Access AutoNumber data type.

Answer

Selected Answer:

surrogate

Correct Answer:

surrogate

Question 7


The properties of the entities you choose as you design the user view will become the ____ in the appropriate tables.

Answer

Selected Answer:

columns

Correct Answer:

columns

Question 8

0 out of 2.5 points

The crucial issue in making the determination between a single many-to-many-to-many relationship and two (or three) many-to-many relationships is the ____.

Answer

Selected Answer:

data dependence

Correct Answer:

independence

Question 9


On an E-R diagram, the number closest to the rectangle represents ____ cardinality.

Answer

Selected Answer:

maximum

Correct Answer:

maximum

Question 10

0 out of 2.5 points

A(n) ____ is a system-generated primary key that is usually hidden from users.

Answer

Selected Answer:

artificial key

Correct Answer:

surrogate key


OK

In IDEF1X, the ____ is the symbol for category.

Answer

Selected Answer:

circle

Correct Answer:

circle

Question 2


____ means that an entity has a minimum cardinality of one.

Answer

Selected Answer:

The entity is required in the relationship

Correct Answer:

The entity is required in the relationship

Question 3


The properties of the entities you choose as you design the user view will become the ____ in the appropriate tables.

Answer

Selected Answer:

columns

Correct Answer:

columns

Question 4

0 out of 2.5 points

On an E-R diagram, the number closest to the relationship represents ____ cardinality.

Answer

Selected Answer:

maximum

Correct Answer:

minimum

Question 5


A set of requirements that is necessary to support the operations of a particular database user is known as a(n) ____.

Answer

Selected Answer:

user view

Correct Answer:

user view

Question 6

0 out of 2.5 points

A(n) ____ is a system-generated primary key that is usually hidden from users.

Answer

Selected Answer:

artificial key

Correct Answer:

surrogate key

Question 7


After the information-level design is completed, the ____ is the next step.

Answer

Selected Answer:

physical-level design

Correct Answer:

physical-level design

Question 8


An entity that exists to implement a many-to-many relationship is called a(n) ____.

Answer

Selected Answer:

composite entity

Correct Answer:

composite entity

Question 9


If each employee works in a single department and each department has only one employee, the relationship between employees and departments is ____.

Answer

Selected Answer:

one-to-one

Correct Answer:

one-to-one

Question 10


Independent entities have ____ in an E-R diagram.

Answer

Selected Answer:

square corners

Correct Answer:

square corners


OK

0 out of 2.5 points

____ integrity implies that the value entered for any field should be consistent with the data type for that field.

Answer

Selected Answer:

Format

Correct Answer:

Data type

Question 2


____ contain information about table relationships, views, indexes, users, privileges, and replicated data.

Answer

Selected Answer:

Catalogs

Correct Answer:

Catalogs

Question 3


The technique for identifying the person who is attempting to access the DBMS is known as ____.

Answer

Selected Answer:

authentication

Correct Answer:

authentication

Question 4


A string of characters assigned by the DBA to a database that the user must enter to access the database is known as a database ____.

Answer

Selected Answer:

password

Correct Answer:

password

Question 5


Data about the data in a database is known as ____.

Answer

Selected Answer:

metadata

Correct Answer:

metadata

Question 6


____ denies access by other users to data while the DBMS processes one user's updates to the database.

Answer

Selected Answer:

Locking

Correct Answer:

Locking

Question 7


The DBMS accomplishes ____ by reading the log for the problem transactions and applying the before images to undo their updates.

Answer

Selected Answer:

backward recovery

Correct Answer:

backward recovery

Question 8


After a DBMS detects a deadlock, the ____ should break the deadlock.

Answer

Selected Answer:

DBMS

Correct Answer:

DBMS

Question 9


To break a deadlock, the DBMS chooses one deadlocked user to be the ____.

Answer

Selected Answer:

victim

Correct Answer:

victim

Question 10


A(n) ____ is a snapshot of certain data in a database at a given moment in time.

Answer

Selected Answer:

view

Correct Answer:

view

Sunday, November 6, 2011 2:10:40 AM EST

OK

You will only be allowed 2 attempts to take this Quiz.

Question 1


To break a deadlock, the DBMS chooses one deadlocked user to be the ____.

Answer

false

Selected Answer:

victim

Correct Answer:

victim

Question 2


Data about the data in a database is known as ____.

Answer

Selected Answer:

metadata

Correct Answer:

metadata

Question 3


____ a database reverses encryption.

Answer

Selected Answer:

Decrypting

Correct Answer:

Decrypting

Question 4


The DBA usually creates groups of users called ____.

Answer

Selected Answer:

workgroups

Correct Answer:

workgroups

Question 5


A(n) ____ is a snapshot of certain data in a database at a given moment in time.

Answer

Selected Answer:

view

Correct Answer:

view

Question 6


If two or more users are waiting for the other user to release a lock before they can proceed, this is known as a ____.

Answer

Selected Answer:

deadlock

Correct Answer:

deadlock

Question 7


____ integrity implies that the value entered for any field should be consistent with the data type for that field.

Answer

Selected Answer:

Data type

Correct Answer:

Data type

Question 8


In order to accomplish serial processing of updates, many DBMSs use ____.

Answer

Selected Answer:

locking

Correct Answer:

locking

Question 9


The technique for identifying the person who is attempting to access the DBMS is known as ____.

Answer

Selected Answer:

authentication

Correct Answer:

authentication

Question 10


After a DBMS detects a deadlock, the ____ should break the deadlock.

Answer

Selected Answer:

DBMS

Correct Answer:

DBMS

Sunday, November 6, 2011 2:22:59 AM EST

OK


After the database designers complete the information-level design, the DBA does the ____-level design.

Answer

Selected Answer:

physical

Correct Answer:

physical

Question 2


Which of the following DBMS evaluation categories does the following question relate to: Is it a simple catalog or can it contain more content, such as information about programs and the various data items these programs access?

Answer

Selected Answer:

Data dictionary

Correct Answer:

Data dictionary

Question 3


____ integrity is the constraint that says that the values in foreign keys must match values already in the database.

Answer

Selected Answer:

Referential

Correct Answer:

Referential

Question 4


After the DBMS is purchased, the ____ has primary responsibility for installation and maintenance.

Answer

Selected Answer:

DBA

Correct Answer:

DBA

Question 5


Which of the following DBMS evaluation categories does the following question relate to: Does the vendor of the DBMS supply printed or online training manuals and how good are the manuals?

Answer

Selected Answer:

Documentation and training

Correct Answer:

Documentation and training

Question 6


Which of the following DBMS evaluation categories does the following question relate to: How many files can you open at the same time?

Answer

Selected Answer:

Limitations

Correct Answer:

Limitations

Question 7


Tables with indexes allow faster searches, but slower performance on ____.

Answer

Selected Answer:

updates

Correct Answer:

updates

Question 8


The ____ is responsible for providing training in the use of the DBMS.

Answer

Selected Answer:

DBA

Correct Answer:

DBA

Question 9


Which of the following DBMS evaluation categories does the following question relate to: Does the DBMS allow partial copies and how does the DBMS handle updates to the same data from two or more replicas?

Answer

Selected Answer:

Replication and distributed databases

Correct Answer:


Question 10


The ____ determines the access privileges for all users and enters the appropriate authorization rules in the DBMS catalog to ensure that users access the database only in ways in which they are entitled to do so.

Answer

Selected Answer:

DBA

Correct Answer:

DBA

Tuesday, November 22, 2011 1:08:21 AM EST

OK

Question 1


The ____ determines the access privileges for all users and enters the appropriate authorization rules in the DBMS catalog to ensure that users access the database only in ways in which they are entitled to do so.

Answer

Selected Answer:

DBA

Correct Answer:

DBA

Question 2


Which of the following DBMS evaluation categories does the following question relate to: Is it a simple catalog or can it contain more content, such as information about programs and the various data items these programs access?

Answer

Selected Answer:

Data dictionary

Correct Answer:

Data dictionary

Question 3


____ converts a table that is in third normal form to a table no longer in third normal form.

Answer

Selected Answer:

Denormalization

Correct Answer:

Denormalization

Question 4


Which of the following DBMS evaluation categories does the following question relate to: Does the DBMS allow partial copies and how does the DBMS handle updates to the same data from two or more replicas?

Answer

Selected Answer:


Correct Answer:


Question 5


Changing the database design to improve the performance is called ____ the design.

Answer

Selected Answer:

tuning

Correct Answer:

tuning

Question 6


A ____ is a place where a record of certain corporate data is kept.

Answer

Selected Answer:

data archive

Correct Answer:

data archive

Question 7


Which of the following DBMS evaluation categories does the following question relate to: On what operating system and hardware is the DBMS supported?

Answer

Selected Answer:

Limitations

Correct Answer:

Limitations

Question 8


The ____ is responsible for providing training in the use of the DBMS.

Answer

Selected Answer:

DBA

Correct Answer:

DBA

Question 9


Tables with indexes allow faster searches, but slower performance on ____.

Answer

Selected Answer:

updates

Correct Answer:

updates

Question 10


Which of the following DBMS evaluation categories does the following question relate to: What types of files can you import or export?

Answer

Selected Answer:

Portability

Correct Answer:

Portability

Tuesday, November 22, 2011 1:23:21 AM EST

OK

Question 1


With respect to the definition of data warehouse, ____ means that data in a data warehouse represents snapshots of data at various points in time in the past.

Answer

Selected Answer:

time-variant

Correct Answer:

time-variant

Question 2


When a centralized database becomes unavailable for any reason, no users can continue processing. In contrast, if a local database in a distributed database becomes unavailable, only users who need that data are affected. Because of this, distributed databases have a(n) ____ advantage over a centralized database.

Answer

Selected Answer:

system availability

Correct Answer:

system availability

Question 3


____ refers to the association of an operation to actual program code.

Answer

Selected Answer:

Binding

Correct Answer:

Binding

Question 4

0 out of 2.5 points

In ____ systems, data and actions are encapsulated.

Answer

Selected Answer:

relational

Correct Answer:

object-oriented

Question 5


_____ is a standard interface that provides the capability necessary for Web browsers to communicate with server-side extensions.

Answer

Selected Answer:

Common Gateway Interface

Correct Answer:


Question 6


____ is the data communication method used by Web clients and Web servers to exchange data on the Internet.

Answer

Selected Answer:

HTTP

Correct Answer:

HTTP

Question 7


When users interact with an RDBMS, they use transactions. These types of systems are called ____ systems.

Answer

Selected Answer:

OLTP

Correct Answer:

OLTP

Question 8


With respect to the definition of data warehouse, ____ means that the data is read-only.

Answer

Selected Answer:

nonvolatile

Correct Answer:

nonvolatile

Question 9

0 out of 2.5 points

____ is a metalanguage derived from a restricted subset of SGML, and designed for the exchange of data on the Web.

Answer

Selected Answer:

HTTP

Correct Answer:

XML

Question 10

0 out of 2.5 points

Because the clients and the server perform different functions and can run two different operating systems, there is an arrangement of client/server architecture known as ____.

Answer

Selected Answer:

three-tier architecture

Correct Answer:

two-tier architecture

Saturday, November 26, 2011 3:17:00 AM EST

OK


A(n) ____ consists of rows that contain consolidated and summarized data.

Answer

Selected Answer:

fact table

Correct Answer:

fact table

Question 2


____ is the ability of a computer system to continue to function well as utilization of the system increases.

Answer

Selected Answer:

Scalability

Correct Answer:

Scalability

Question 3


Uncovering new knowledge, patterns, trends, and rules from the data stored in a data warehouse is known as ____.

Answer

Selected Answer:

data mining

Correct Answer:

data mining

Question 4


The formula for message transmission time is: communication time = access delay + (data volume / X), where X represents ____.

Answer

Selected Answer:

transmission rate

Correct Answer:

transmission rate

Question 5

0 out of 2.5 points

_____ is a standard interface that provides the capability necessary for Web browsers to communicate with server-side extensions.

Answer

Selected Answer:

Web Server Interface

Correct Answer:


Question 6


When a centralized database becomes unavailable for any reason, no users can continue processing. In contrast, if a local database in a distributed database becomes unavailable, only users who need that data are affected. Because of this, distributed databases have a(n) ____ advantage over a centralized database.

Answer

Selected Answer:

system availability

Correct Answer:

system availability

Question 7


With respect to the definition of data warehouse, ____ means that data is stored in one place, even though it originates from everywhere in the organization and from a variety of external sources.

Answer

Selected Answer:

integrated

Correct Answer:

integrated

Question 8


When the data is organized by entity rather than by the application that uses the data, it is called ____.

Answer

Selected Answer:

subject-oriented

Correct Answer:

subject-oriented

Question 9


____ implies that the performance of functions such as adding sites, changing versions of DBMSs, creating backups, and modifying hardware should not require planned shutdowns of the entire distributed database.

Answer

Selected Answer:

Continuous operation

Correct Answer:

Continuous operation

Question 10


A DDBMS that has at least two sites at which the local DBMSs are different is known as a ____.

Answer

Selected Answer:

heterogeneous DDBMS

Correct Answer:

heterogeneous DDBMS

DBA 110 Final study guide

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