by Dinesh Thakur Category: System Analysis

In decision-making under risk, the probabilities of various states of nature are assumed to be known. Probabilities of the various states of nature are not known to the decision–maker and thus, he cannot apply the maximization/minimization of expected value criteria as in the case of decision under risk.

 
by Dinesh Thakur Category: System Analysis

In order to collect information so as to study existing system and to determine information requirement, there are different strategies, which could be used for a purpose. These strategies are discussed below.



 
by Dinesh Thakur Category: System Analysis

SQA is a concept that spans across the entire software development process. It focuses on improving the process of development of software so that problems can be prevented before they become a major issue. SQA also involves continuous monitoring of the process and making sure those agreed-upon standards and procedures are followed all along in the development process. It is the process of providing adequate assurance (to clients, senior management and other stakeholders) on (quality of) the process followed in the development of software (so that all concerned are satisfied about the fact that the plans laid out for development have been adhered to and that the software as developed conforms to specifications).

 
by Dinesh Thakur Category: System Analysis

The decision theory (decision analysis) refers to the techniques for analysis decisions under risk and uncertainty. In the process of decision-making the decision –maker wants to achieve something, which may be called his goal, purpose or objective. The decision –maker may choose one particular alternative, which is called strategy of the decision maker,from among various alternatives.

 
by Dinesh Thakur Category: Implementation and Evaluation

The results obtained from the evaluation process help the organization to determine whether its information systems are effective and efficient or otherwise. The process of monitoring, evaluating, and modifying of existing information systems to make required or desirable improvements may be termed as System Maintenance.



 
by Dinesh Thakur Category: Implementation and Evaluation

Selecting hardware and software for implementing information system in an organization is a serious and time-consuming process that passes through several phases. The main steps of the selection process are listed below:



 
by Dinesh Thakur Category: Implementation and Evaluation

Implementation of a system is as much important as the creation of it. Implementation can easily destroy the good work done in the earlier phases and bring the system to a standstill. Implementation requires technical and managerial skills as the implementers work as change agents. Implementation is also a process that has a series of sequential steps which culminates in making operational the new system.

 
by Dinesh Thakur Category: Implementation and Evaluation

           In cost/benefit evaluation of the various expected costs, the benefits to be expected from the system and expected savings is done. The cost/benefit analysis determines the cost-effectiveness of the system. The various categories of costs and benefits are measured and included in cost/benefit analysis.

 
by Dinesh Thakur Category: Implementation and Evaluation

It has been observed that certain factors are critical for the successful implementation of information systems. These factors fall under both management and technical factors. The critical factors that determine the success of implementation of information systems are:



 
by Dinesh Thakur Category: Information System as an Enabler

Efficiency is a measure of the amount of resources required to achieve the output, i.e. the use of system resources to get results. Being efficient implies the system is operating the ‘right’ way.

 

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.



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