Exercise: Database Systems

Questions for: Database Systems

Sort/report generators
A:
are faster than index/report generators
B:
require more disk space than index/report generators
C:
do not need to sort before generating a report
D:
both (a) and (b)
Answer: B
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Periodically adding, changing and deleting file records is called file
A:
Updating
B:
upgrading
C:
restructuring
D:
renewing
Answer: A
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In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction?
A:
ZIP
B:
PACK
C:
COMMIT
D:
SAVE
Answer: C
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Data item characteristics that are important in data management include
A:
punctuation
B:
language
C:
spelling
D:
width
Answer: D
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What is the language used by most of the DBMSs for helping their users to access data?
A:
High level language
B:
Query language
C:
SQL
D:
4GL
Answer: B
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