1) Name three methods of implementing a new system.

2)After the system is designed it will need to be implemented.Discuss methods by which the system could be implemented and give reasons why the systems analyst might choose one of the methods and not the others?

1) Three methods of implementing a new system are:

a) Direct cutover: This method involves the immediate transition from the old system to the new system at a specific date and time. The old system is discontinued, and the new system is implemented without any overlap. This method is quick and cost-effective but can be risky as there is no fallback option.

b) Phased implementation: This method involves implementing the new system in phases or modules. Each phase is defined, tested, and implemented separately, allowing for a smoother transition and reducing the risk of failures. It provides more control and allows for adjustments as each phase progresses but can take longer to complete.

c) Parallel implementation: This method involves running both the old and new systems simultaneously for a period of time. The data and processes are duplicated, and users gradually transition to the new system. It offers a controlled environment to address any issues while ensuring continuous operations, but can be more resource-intensive and time-consuming.

2) The choice of implementation method depends on several factors and trade-offs, and the systems analyst may consider the following reasons when selecting one method over the others:

- Risk tolerance: If the organization has a high tolerance for risk and can afford potential disruptions or downtime, direct cutover can be chosen for its speed and cost-effectiveness. However, if the organization has a low tolerance for risk, they may opt for phased implementation or parallel implementation to mitigate the risk of failures.

- System complexity: If the new system is relatively simple, direct cutover can be a suitable option. However, for complex systems, phased implementation or parallel implementation would be preferable as they allow for gradual testing and adjustments.

- Resources and timeline: Phased implementation allows for better resource allocation, as resources can be allocated to each phase separately. However, direct cutover may be chosen if there are tight deadlines or limited resources available.

- User acceptance and training: If user acceptance and training are significant concerns, parallel implementation may be preferred as it allows users to gradually adapt to the new system while still having access to the old system for reference and fallback.

Ultimately, the choice of implementation method should align with the organization's goals, risk appetite, available resources, and the complexity of the new system.

1) Three methods of implementing a new system are:

a) Phased Implementation: This approach involves gradually implementing the new system in different phases or stages. Each phase is tested and refined before moving on to the next phase. This method allows for a controlled and less disruptive transition, as users can adapt to the new system in a step-by-step manner.

b) Pilot Implementation: In pilot implementation, the new system is initially tested and implemented in a small portion or subset of the organization. This allows for thorough testing and evaluation of the system's effectiveness in a controlled environment before rolling it out to the entire organization. It also provides an opportunity to identify any issues or challenges that may arise and make necessary adjustments.

c) Parallel Implementation: This approach involves running both the new and old systems simultaneously for a certain period of time. There will be a duplication of effort as data is entered into both systems, but it provides a safety net in case the new system encounters issues or fails. Once users are confident in the new system's functionality and accuracy, the old system is retired.

2) The choice of implementation method depends on several factors, including the nature of the system, the organization's size, resources, and culture. Here are some reasons why a systems analyst might choose one implementation method over others:

- Phased Implementation: This method may be suitable when the new system is complex, involves significant changes in workflows, or requires training for users. Breaking down the implementation into phases allows users to gradually learn and adapt to the new system. It also minimizes the disruption to the organization's operations.

- Pilot Implementation: If there is uncertainty about the new system's effectiveness or compatibility with existing systems, a pilot implementation can provide a controlled environment for testing. It allows for early identification of potential issues and fine-tuning of the system before rolling it out to the entire organization.

- Parallel Implementation: When the risks associated with switching to a new system are high, parallel implementation can be a viable option. Running both systems simultaneously ensures that if the new system fails or encounters issues, the organization can still rely on the old system to maintain operations. It provides a safety net and reduces the potential for major disruptions.

Ultimately, the choice of implementation method should align with the organization's goals, requirements, and constraints. It should also consider the impact on users and the organization's ability to manage the transition effectively.