Structured Analysis and Design Technique

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The Structured Analysis and Design Technique ( SADT ) is a method for software development that was published in 1977 by Douglas T. Ross. A derivative of this is IDEF .

SADT basic element

The basic element of the modeling is the function, represented as a rectangle, which transforms the input variables (arrows from the left) into the output variables (output, arrows to the right). Mechanisms (arrows from below), for example resources, are required for execution . Further influences or disturbances (control) are shown as arrows from above.

Several functions can be carried out one after the other by combining an output variable of one function with the input variable of the other.

The step-by-step modeling can be done top-down . A function is here broken down hierarchically, i. H. a function of one level is shown in the next level as an interconnection of several sub-functions.

Individual evidence

  1. ^ DT Ross: Structured Analysis (SA): A Language for Communicating Ideas. IEEE Transactions on Software Engineering, SE-3 (1), pp. 16-34. Abstract

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