The answer is A.
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Answer:
E
Explanation:
The requirement analysis phase is a very key vital phase of the system life cycle in which a system designer sees the future result of his input in the system he intends to design, the requirement analysis clearly state the result of any system in progress design and proccess stage
Answer:
Join
Explanation:
Five basic set operators in relational algebra are as follows:
- Selection - tuple selection
- Projection - extract columns
- Cartesian product - cross product of relations
- Set union - union of two relations
- Set difference - minus operation on two relations
As we can see, Join is not part of the basic set operations but it is implemented using the Cartesian Product operator.
