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Editor to share with you what the jackson method refers to. I hope you will get something after reading this article. Let's discuss it together.

Jackson method is a "data structure" oriented software design method. The Jackson method defines a set of mapping processes guided by the data structure, which maps to the process description of the software according to certain rules according to the input and output data structure, that is, the program structure, rather than the software architecture, so this method is suitable for the detailed design stage.

Jackson design method is a data structure-oriented software design method, and Jackson analysis method is a data flow-oriented analysis method.

In 1975, M.A.Jackson proposed a kind of software development method which is still widely used today. This method starts with the input and output data structure of the target system, derives the program framework structure, and then adds other details, a complete program structure diagram can be obtained. This method is especially effective for small and medium-sized systems with clear input and output data structures, such as document table processing in commercial applications. This method can also be combined with other methods for the detailed design of the module. The Jackson structure chart is used to describe the order, selection and repetition in the data structure.

Because the Jackson method is oriented to data structure design, it provides its own tool-Jackson structure diagram. Jackson pointed out that both data structure and program structure are limited to three basic structures: sequential structure, selective structure and repetitive structure and their combinations.

The Jackson design method is generally accomplished through the following five steps:

1. Analyze and determine the logical structure of input data and output data, and use Jackson structure diagram to represent these data structures.

2. Find out the corresponding data units in the input data structure and the output data structure.

3. Derive the program structure from the input and output data structure according to the following rules.

1) draw a processing box for each pair of units that have a corresponding relationship in the input data structure and the output data structure.

2) draw a processing box for the remaining data units in the input and output data structures.

3) the position of all processing boxes on the program structure diagram should be consistent with the position of the data units processed by it on the data structure Jackson diagram.

4) if necessary, the program structure diagram derived from the mapping can be further refined.

4. List the basic operations and conditions and assign them to the appropriate location of the program structure diagram.

5. Write a program with pseudo code

After reading this article, I believe you have a certain understanding of "what jackson method refers to". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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