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31. The users who use easy-to-use menu are called
Sophisticated end users
Naive users
Stand-alone users
Casual end user
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32. Which database level is closest to the users?
External
Internal
Physical
Conceptual
33. The result of the UNION operation between R1 and R2 is a relation that includes
All the tuples of R1
All the tuples of R2
All the tuples of R1 and R2
All the tuples of R1 and R2 which have common columns
34. A set of possible data values is called
Attribute
Degree
Tuple
Domain
35. Which of the operations constitute a basic set of operations for manipulating relational data?
Predicate calculus
Relational calculus
Relational algebra
None of the above
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