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BUAN 6320 Questions with correct answers
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BUAN 6320 Questions with correct answers
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BUAN 6320 Questions with correct answersIf X is a foreign key of table T referencing the same table T's primary
key A, then X must be unique. Correct Answer-true
For each column in a table, the ___________________ defines a set of
values and permissible operations on those values. Correct Answer-data
type
A language such as SQL allowing the user to specify the parts of a
database rather than to code a complex procedure is called a
nonprocedural database language. Correct Answer-True
Which one of the following is the least likely to be viewed as a
transaction?
a. Retrieving a customer's latest purchase correct
b. Transferring $1000 from a customer's savings account to the
customer's checking account
c. Reserving a seat on a planed.
d. Reserving a hotel room
e. None of the above Correct Answer-a. Retrieving a customer's latest
purchase correct.
A database is said to be shared when multiple users can access the same
database for multiple uses, but must take turns accessing the database.
Correct Answer-false
don't need to take turns
, Data is said to be persistent when it resides on stable storage and is
never removed or archived for the life of the business. Correct Answer-
false
-should be removed/archived
To ensure that a database contains valid connections, the
_____________________ rule states that the values of columns in one
table must match the values of columns in other tables. Correct Answer-
none of the above
referential integrity - must match values of columns in SOURCE table.
The ability to add the new column without requiring changes to all of the
application programs strongly relates to the following feature of modern
database systems: Correct Answer-data independence
A procedural language interface is necessary because nonprocedural
access and application development tools of database software are
sometimes not powerful enough or do not provide the level of control
necessary for significant application development. Correct Answer-true
The three-schema architecture is strongly related to the following feature
of database systems: Correct Answer-data independence
The primary key of a table is chosen among: Correct Answer-all
candidate keys
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