Bài thuyết trình môn Phân tích & thiết kế hệ thống - Đề tài: Preparing the systems proposal - Nguyễn Bá Quốc
Systems Analysis and Design
Preparing the Systems Proposal
Giảng viên: Nguyễn Thanh Tùng
Thành viên nhóm 7:
Nguyễn Bá Quốc 1413175
Nguyễn Trường Xuân 1414821
5/1/2022
Learning Objectives
• Inventory and appraise current and proposed
hardware and software and the way it supports
human interactions with technology
• Evaluate software by addressing the trade-offs
among creating custom software, purchasing COTS
software, and outsourcing to an application service
provider
• Assist decision makers in choosing decision support
systems, including recommendation systems and
neural nets
5/1/2022
Learning Objectives
• Forecast tangible and intangible costs and
benefits, and perform a cost-benefit analysis
using a number of methods
• Professionally write and present an effective
systems proposal, incorporating figures and
graphs
5/1/2022
Systems Proposal
• A distillation of all that the system analyst has
learned about users, the business, and about
what is needed to improve its performance
• Systematic methods to:
– Acquire hardware and software
– Identify and forecast costs and benefits
– Perform a cost-benefit analysis
5/1/2022
Major Topics
• Ascertaining hardware/software needs
• Tangible and intangible costs and benefits
• Systems proposal
• Using tables, graphs, and figures
5/1/2022
Ascertaining Hardware
and Software Needs
Steps used to determine hardware and
software needs:
• Inventory computer hardware currently available
• Estimate current and future system workloads
• Evaluate available hardware and software
• Choose the vendor
• Acquire the computer equipment
Ascertaining Hardware
and Software Needs
Steps in choosing hardware and software
5/1/2022
Inventorying Computer Hardware
• Type of equipment
• Operation status of the equipment
• Estimated age of equipment
• Projected life of equipment
• Physical location of equipment
• Department or person responsible for equipment
• Financial arrangement for equipment
5/1/2022
Estimating Workloads
• Systems analysts formulate numbers that
represent both current and projected
workloads for the system so that any
hardware obtained will possess the capability
to handle current and future workloads
5/1/2022
Estimating Workloads
Comparisons of workloads between
existing and proposed systems
5/1/2022
Evaluating Hardware
• Time required for average transactions
• Total volume capacity of the system
• Idle time of the CPU or network
• Size of memory provided
People That Evaluate Hardware
• Management
• Users
• Systems analysts
5/1/2022
Acquisition of Computer Equipment
Buying
5/1/2022
Acquisition of Computer Equipment
Leasing
5/1/2022
Acquisition of Computer Equipment
Renting
5/1/2022
Evaluating Vendor Support
• Hardware support
• Software support
• Installation and training support
• Maintenance support
5/1/2022
Other Considerations
• Possibility of adding on to the system
• Interfacing with equipment from other
vendors
• Adding more memory
• Corporate stability of the vendor
5/1/2022
Software Alternatives
Provided by an application service
provider (ASP)
5/1/2022
Software Alternatives
Creating Custom Software
5/1/2022
Software Alternatives
Purchased as COTS (commercial
off-the-shelf) software
5/1/2022
Software Evaluation
Guidelines for evaluating software
5/1/2022
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