从供选择的答案中，选出最确切的解答。 （1) analysis emphasizes the drawing of pictorial system mode

从供选择的答案中，选出最确切的解答。

(1)analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the' system models become the(2)for designing and constructing an improved system.(3)is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series ofprocess models called(4).(5)is another such technique that integrates data and process concerns into constructs called objects.