4. The method of claim 2 , wherein the traversing the tree comprises repeatedly, until a root node is reached: (i) moving up a level the tree to determine a parent node; (ii) determining whether the parent node is an AND operator; (iii) if the parent node is an AND operator, identifying each child expression of the parent node as an expression in the plurality of expressions that will be ANDed with results of the determined measure expression.
2. The method of claim 1 , wherein the sequence of queries includes (i) a first query that retrieves data for a dimension criteria expression in the plurality of expressions filtered by the measure expression, and (ii) a second query that is to be executed after the first query and that intersects data from the data source with data retrieved with the first query.