Software requirements specification database based on requirements frame model

The author proposes a method to build a relational database of software requirements specifications (SRSs) from textual SRSs automatically. The author has been developing a requirements model called requirements frame and a text-base requirements language based on the model in order to improve the quality of SRSs. Since requirements frame can be transformed into a relational data model, each of the requirement sentences can be regarded as a tuple of a relational table. The author has been developing both a query language and a relational database management system for on SRS database. One of the features of the SRS DB system is to give an answer with a requirement sentence as an example/counter-example. This feature contributes to verification of the SRS from a developer´s own viewpoint. Another feature is detecting changed requirements in modification of the SRS. This feature contributes to effective maintenance of the SRS