PIECES框架是IT项目系统需求分析时的一个模型。PIECES框架能够完整、准确、快速地确定信息系统的需求，确认业务中存在的问题、机会和改进目标。
A checklist for identifying problems with an existing information system.
- Performance
- Throughput
- Response Time
- Information (and Data)
- Outputs
- Lack of any information
- Lack of necessary information
- Lack of relevant information
- Too much information – information overload
- Information that is not in a useful format
- Information that is not accurate
- Information that is difficult to produce
- Information that is not timely to its subsequent use
- Inputs
- Data is not captured
- Data is not captured in time to be useful
- Data is not accurately captured – contains errors
- Data is difficult to capture
- Data us captured redundantly – same data is captured more than once
- Too much data is captured
- Illegal data is captured
- Stored Data
- Data is stored redundantly in multiple files and/or databases
- Stored data is not accurate
- Data is not secure from accident or vandalism
- Data is not well organized
- Data is not flexible – not easy to meet new information needs from stored data
- Data is not accessible
- Economics
- Costs
- Costs are unknown
- Costs are untraceable
- Costs are too high
- Profits
- New markets can be explored
- Current marketing can be improved
- Control (and Security)
- Too little security or control
- Input data is not adequately edited
- Crimes (e.g. fraud, embezzlement) are (or can be) committed against the data
- Ethics are breached on data or information – refers to data or information getting to unauthorized people
- Redundantly stored data is inconsistent in different files or databases
- Data privacy regulations or guidelines are being (or can be) violated
- Processing errors are occurring (either by people, machines, or software)
- Decision- making errors are occurring
- Too much control or security
- Bureaucratic red tape slows the system
- Controls inconvenience customers or employees
- Excessive controls cause processing delays
- Efficiency
- People, machines, or computers waste time
- Data is redundantly input or copied
- Data is redundantly processed
- Information is redundantly generated
- People, machines, or computers waste materials and suppliers
- Effort required for tasks is excessive
- Materials required for tasks is excessive
- Service
- The system produces inaccurate results
- The system produces inconsistent results
- The system produces unreliable results
- The system is not easy to learn
- The system is not easy to use
- The system is awkward to use
- The system is inflexible to new or exceptional situations
- The system is inflexible to change
- The system is incompatible with other systems
- The system is not coordinated with other systems
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Original: https://www.cnblogs.com/wintersun/p/16181558.html
Author: PetterLiu
Title: 需求分析-PIECES框架
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