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Software Requirements Using the Unified Process: A Practical Approach by L. Rene Abreo, Daniel R. Windle

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Chapter 15. Developing an Interface Requirement Specification

In this chapter we look at the Interface Requirement Specification, or IRS. While the Software Requirements Specification (SRS) includes a section for external interfaces, there are times when you will want to write an IRS and simply refer to the IRS from the SRS, for example, when your system has numerous interfaces or when one or more interfaces are very large. Often, the people primarily interested in the IRS are not particularly interested in the SRS when building interfaces. Likewise, most people want to focus separately on these two issues: requirements and interfaces. Creating separate documents can help keep your SRS more readable. It is also possible that you will need to provide ...

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