<span>(A) All records that don't meet the criteria are removed
</span>
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.
The answer is a i looked up the question and it says a
Here, you go drawn , in paint. Please note that you can simplify further more the circuit by removing any two not following each other.
<span>C. Not including inflation into the caluculation will over-estimate the GDP.</span>
