Question: In relational algebra, grouping and aggregation can be done with a single operator. True False Q2.4 1 Point Every relational algebra plan uses the project

In relational algebra, grouping and aggregation can be done with a single operator. True False Q2.4 1 Point Every relational algebra plan uses the "project" operator. True False True False Q2.5 1 Point Subqueries in the WHERE clause must only return one attribute. True False

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