In Data Warehousing, which of these is a valid disadvantage of the Query-Driven Approach?
A. Query Driven Approach is very expensive and very inefficient for frequent queries.
B. This approach is very expensive for those queries that need aggregations.
C. It requires complex processes of integration and filtering.
D. All of the above
Answer:D
In Data Warehousing, which of these is a valid disadvantage of the Query-Driven Approach?
A. Query Driven Approach is very expensive and very inefficient for frequent queries. B. This approach is very expensive for those queries that need aggregations. C. It requires complex processes of integration and filtering. D. All of the above