GATE DA 2026 Set 1 — Question 43
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Database Management & Warehousing → Data Warehousing → Concept Hierarchies
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Question
Consider the concept hierarchies as shown in the figure.Which of the following options denotes the total number of possible data cuboids from these concept hierarchies?
Correct answer
(A) 4³
Solution
A concept hierarchy for a dimension consists of levels (including the 'all' level). If there are dimensions with levels respectively, the total number of possible cuboids is . Here, we have 3 dimensions:
1.Time: All Year Month Day (4 levels)
2.Location: All Country State City (4 levels)
3.Item: All Item Category Item Type Item (4 levels)
Total cuboids = .Continue learning with Success Tracker
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