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36. Data encryption techniques are particularly useful for
A. reducing storage space requirements
B. improving data integrity
C. protecting data in data communication systems
D. All of the above
E. None of the above
37. It is more accurate to define a _____ as a variety of different record types that are treated as a single unit
A. Database
B. Table
C. Record
D. Flat File
E. None of the above
38. A logical schema
A. is the entire database
B. is a standard way of organizing information into accessible parts
C. describes how data is actually stored on disk
D. All of the above
E. None of the above
39. Queries to a database
A. are written in English
B. can use aggregate functions like SUM and COUNT
C. both (a) and (b)
D. All of the above
E. None of the above
40. In order to use a record management system
A. You need to understand the low-level details of how information in stored
B. You need to understand the model the record management system uses.
C. Both (a) and (b)
D. All of the above
E. None of the above
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