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The first step in developing a system is to define it (requirement specification). In this paper, the combination of the complexity of the incremental model with the object-oriented software engineering model led to a new way of developing software system requirements based on the system's goal. This study focused on the earliest and most critical stage of a software system's life cycle: creating the software specifications that would be utilized to ensure its success. These requirements must be carefully examined when developing a trustworthy software system. This method is used to design and define requirements for COVID-19's social distance online reservation system, and it proved its efficiency in terms of describing what had to be done and the subsequent processes for design, building, and development. COVID-19 developed and enhanced the system. Use it afterwards to demonstrate how nicely it functions. [ABSTRACT FROM AUTHOR]

The estimation of software costs is the key step in the software growth process. It estimates the volume of time and effort required to develop a software set up. It is the very important duty, and a precise estimate gives a solid foundation for the growth process. The Constructive Cost Methodology (COCOMO), the most extensively used estimated cost model, is discussed. For perceptron learning technique the artificial neural networks utilized for creating model. The network is trained and tested using COCOMO dataset. The goal of the study is to improve COCOMO model's approximation validity by including artificial neural networks. [ABSTRACT FROM AUTHOR]