What specific languages can be used in SRS? What are the advantages of using these specific languages of SRS?

What specific languages can be used in SRS? What are the advantages of using these specific languages of SRS?
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Ans. Requirement specification necessitates the use of some specification language. The language should support the desired qualities of the SRS- modifiability, understandability, unambiguous, and so forth. The language should be easy to learn and use. For ease of understanding a natural language might be preferable. Though formal notations exist for specifying specific properties of the system, natural languages are now most often used for specifying requirements. The overall SRS is generally in a natural language, and when flexible and desirable, some specifications in the SRS may use formal languages. The major advantage of using a natural language is that both client and superior understand the language. However, by the very nature of a natural language, it is imprecise and ambiguous. To reduce the drawback of natural language, most often natural language is used in a structured fashion. In structured English, requirements are broken into sections and paragraphs. Each paragraph is then broken into sub paragraphs. In an SRS, some parts can be specified better using some formal notation, example- to specify formats of inputs or outputs, regular expression can be very useful. Similarly when discussing system like communication protocols, finite state automata can be used. Decision tables are useful to formally specify the behavior of a system on different combination of input or settings.
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