What is the difference between process-oriented (or structured) analysis methods and object-oriented analysis methods?

1, structured analysis method

The structure method is mainly used to analyze the function of the system, and it is a kind of analytic method that divides the function level directly according to the data stream; The basic feature of structured methods is to use graphical symbols whenever possible when expressing problems, even if non-computer professionals are also easy to understand, design data flow chart only consider the basic functions that the system must complete. There is no need to consider how to implement these functions specifically, for a fairly complex system, theSA employs piecemeal, one-by-one , and from abstraction to concrete-by-layer decomposition.

2, facing the object analysis method

The analysis of the object is divided into the problem analysis and the application analysis, the main task of the problem analysis is to collect and confirm the user's requirement analysis and process analysis, abstract the basic concepts, attributes and operations, then use generalization, composition and correlation structure to describe the static relationship between entities. The main task of application analysis is to dynamically describe the legal state sequence of the object in the system, to express the dynamic behavior of the object with the dynamic model, the message transmission between the objects and the dynamic information of the cooperative work, the basic idea of theOTM method is to treat the analysis process of the object as a model construction process. Three models are constructed in modeling: Dynamic models, object models, and functional models.

What is the difference between process-oriented (or structured) analysis methods and object-oriented analysis methods?