1. A method executed by a computer system, comprising: receiving, at a query engine in the computer system, a continuous stream of data; pushing down processing of the continuous stream of data to a management layer where the query engine executes an application requesting a query of the continuous stream of data using User Defined Functions (UDFs) and performs stream processing of the continuous stream of data; and continuously analyzing, inside the query engine, the continuous stream of data with multilevel, multidimensional window functions in a single long-standing query.