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Exam C2090-930 topic 1 question 2 discussion

Actual exam question from IBM's C2090-930
Question #: 2
Topic #: 1
[All C2090-930 Questions]

You have two data sets. One data set contains customer name and age information along with a customer ID. The second data set contains the customer ID along with address information. There are no addresses which do not belong to a customer, there are customers which have no address, and there are customers which have multiple addresses.
Which type of join will display all customers who have no recorded address?

  • A. Inner join
  • B. Outer join
  • C. Partial outer join
  • D. Anti-join
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Suggested Answer: C 🗳️
by SumitKmr at Oct. 2, 2019, 10:34 a.m.

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Ashok21
3 months, 3 weeks ago
An Anti-join is the type of join that will display all customers who have no recorded address. An Anti-join returns only the rows from the left (or right) table where there is no match based on the specified condition. In this case, you would perform an Anti-join on the customer ID, selecting rows from the customer information dataset where there is no corresponding match in the address information datase
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SumitKmr
4 years, 7 months ago
Correct answere is "D"
upvoted 3 times
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