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Computer Science - Database Systems

Exercise : Database Systems - Section 3
36.
Data encryption techniques are particularly useful for
reducing storage space requirements
improving data integrity
protecting data in data communication systems
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
It is more accurate to define a _____ as a variety of different record types that are treated as a single unit
Database
Table
Record
Flat File
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
A logical schema
is the entire database
is a standard way of organizing information into accessible parts
describes how data is actually stored on disk
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Queries to a database
are written in English
can use aggregate functions like SUM and COUNT
both (a) and (b)
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
In order to use a record management system
You need to understand the low-level details of how information in stored
You need to understand the model the record management system uses.
Both (a) and (b)
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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