oday public sector is an integral part of Govt. and performance of it, has considerable scope for improvement. However, these sector such as govt. hospital, depends on information system, which have been engineered in earlier days, such legacy system using procedural methodology, db handling , GUI etc. As services grow in size or the requirement of public increases continuously, due to this there is accelerating need software maintenance. It has been observed that, the cost of the maintenance is much higher than the cost of reengineering of the software. And also continue maintenance of such system become tedious and cost approach and occurrence of software failure is more due to poor documentation, poorly structured & transparency, and also changes technology infra structured in hardware and software, complexity of module increases continuously, and finally logic code written is outdated hardware and software. Therefore, maintenance is not a good choice. Reengineering, is much better than maintenance. It is an approach to solve problem of legacy system. Its aim is the qualitative improvement of existing software and the extension of its life expectancy. It consists of examination (reverse engineering) and alteration (forward engineering) of legacy system.

The purposed methodology, used to reengineering of module of public sector i.e. more suitable, for available tools and techniques. It will create significant improvement to measure the complexity and Author : Professor, Department of Computer Science & Application Kurukshetra University, Kurukshetra, India. E-mail : [email protected] Author : Asst. Professor, Computer Science & Engg. Vaish College of Engineering, Rohtak, India. E-mail : [email protected] effort of module individually by using Excel Template [9]. The Excel Template that is used to measure complexity of each and every modules of hospital are Modified Method Hiding Factor It also specifies causes of errors and the use of the safety design concepts, to prevent minimize errors by detecting them, before undesirable effect takes place. The excel template provides facility to reengineering the modules in such a way that help enables the doctors to better serve their patients, Reducing the time spent by staff filling out forms, Control over the costs incurred by diagnosis -related groups, Increased nursing productivity, Faster and informed decision-making by doctors, Improve decision support for the management, Cost-effective patient transactions.

HMS is powerful, flexible, easy to use and has designed & developed to deliver real conceivable benefits to hospitals and clinics. It is designed for multi specialty hospitals, to cover a wide range of hospital administration and management processes.

Hospital Management System is a product of our deep experience in delivering successful solutions to various customers in the healthcare space and our expertise in developing unique Intellectual Property in the form of products and re-usable components for the Healthcare Industry. Conventional methodology, based on SDLC, there is no way to measurement of complexity and effort of module during reengineering of module as well as this methodology not support reusability and also productivity of module not very much effective.

Structured Methodology is slightly improvement of conventional methodology. If we reengineering the module by using this methodology, it help to measure control but not support reusability, but help in productivity and quality of analysis and design. It will provide more effective analysis & more stable or maintainable design. However, both these methodology not support today's available tool and techniques.

There are twelve excel template that are used to determine complexity of module that are more efficient as compared to other methodologies. Six excel template [9] such as M-MHF, M-AHF, M-MIF, M-AIF, M-PF & M-CF are used to determine complexity of each and every module of the system, as well as it also provides facilities to hide information, to increase reusability & productivity of modules, measure the degree of method overriding in class inheritance and also measure degree of coupling among different types of modules.

Other six excel template [9] , such as M-WMC, M-DIT, M-NOC, M-CBO, M-RFC & M-LCOM, are used to determine effort i.e. required to reengineering of the module during Post Martem Methodology [1 2,3] . The purposed methodology also, allows the developer to communicate using well-known, well understood names for the software interactions. Common design pattern can improved over time, making them more robust than ad-hoc (in-formal or unplanned) design.

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Overall objective of this paper, is that modules are design in such a way that if any time any where any module need for reengineering in future, it is easily takes place. As well as it provides facilities to determine complexity [3,4] and effort from that module, where reengineering happens. It does not need to determine complexity of entire modules again and again. And it will focus on optimization and increase productivity [7], reusability [7] , flexibility [7] , understandability and also support reliability of modules [10] .