系统分析与设计 第一章ppt
合集下载
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Systems Analysis and Design in a Changing World, 4th Edition
1
7
1
Systems That Solve Business Problems
System
– interrelated components functioning together to achieve an outcome
1
The Analyst as a Business Problem Solver
Has
computer technology knowledge and programming expertise business problems
Understands Uses Has
logical methods for solving problems
10
System Boundary vs. Automation Boundary
1
Systems Analysis and Design in a Changing World, 4th Edition
11
1
Types of Information Systems
Transaction
processing systems (TPS)
Describe
Explain
the importance of technical, people, and business skills for an analyst why ethical behavior is crucial for a systems analyst’s career
3
Describe
Discuss
Describe
Systems Analysis and Design in a Changing World, 4th Edition
1
Overview
Information
sຫໍສະໝຸດ Baidustems
Crucial to success of modern business organizations Constantly being developed to make business more competitive Impact productivity and profits
14
1
Required Skills of the Systems Analyst
Systems Analysis and Design in a Changing World, 4th Edition
15
1
Technical Knowledge and Skills
An
analyst should have fundamental technology knowledge of
Capture and record information about organization’s transactions
Management
information systems (MIS)
Take information captured by TPS Produce reports for planning and control
12
Systems Analysis and Design in a Changing World, 4th Edition
1
Types of Information Systems (continued)
Enterprise
applications
Highly integrated systems that support company-wide operations and data Often combine aspects of TPS, MIS, DSS/KBS
Subsystem
Supersystem
subsystems
Functional
decomposition – dividing a system into smaller subsystems and components
8
Systems Analysis and Design in a Changing World, 4th Edition
Decision
support / knowledge-based systems (DSS/KBS)
Explore impact of available options or decisions (what-if scenarios) Automate routine decision making
Communication
support systems
Facilitate communication internally and with customers and suppliers
Office
support systems
Help employees create and share documents
Analyst understands SDLC techniques
Project planning, systems analysis
Systems design, database design, network design
Construction, implementation, systems support
fundamental curiosity to make things better
Wants Is
more of a business problem solver than a technical programmer
6
Systems Analysis and Design in a Changing World, 4th Edition
Systems Analysis and Design in a Changing World, Fourth Edition
1
1
Learning Objectives
Explain
the key role of a systems analyst in business the various types of systems an analyst might work on
Systems
Systems
analyst – uses analysis and design techniques to solve business problems using information technology
5
Systems Analysis and Design in a Changing World, 4th Edition
Computers / peripheral devices (hardware) Communication networks and connectivity
Database and database management systems (DBMS)
Programming languages (for example, VB.NET or Java) Operating systems and utilities
16
Systems Analysis and Design in a Changing World, 4th Edition
1
Technical Knowledge and Skills (continued)
Analyst uses tools
Software productivity packages
Information
systems – collection of interrelated components that collect, process, store, and provide as output information needed to complete tasks
– part of a larger system – larger system that contains
Analyst’s Approach to Problem Solving
Research and understand the problem Verify benefits of solving problem outweigh the costs Define the requirements for solving the problem Develop a set of possible solutions (alternatives) Decide which solution is best and recommend Define the details of the chosen solution Implement the solution Monitor to ensure desired results
2
Explain
Systems Analysis and Design in a Changing World, 4th Edition
1
Learning Objectives (continued)
Describe
the many types of technology an analyst needs to understand various job titles and places of employment where analysis and design work is done the analyst’s role in strategic planning for an organization the analyst’s role in a system development project
1
Overview (continued)
Systems
analysis – process of understanding in detail what a system should accomplish design – process of specifying in detail how components of an information system should be physically implemented
Integrated development environments (IDEs) for programming languages
CASE tools, testing, documentation support, reverse engineering, configuration management
Keys
to successful system development
Thorough systems analysis and design Understanding what business requires
4
Systems Analysis and Design in a Changing World, 4th Edition
1
Information Systems and Subsystems
Systems Analysis and Design in a Changing World, 4th Edition
9
Information Systems and Component Parts
1
Systems Analysis and Design in a Changing World, 4th Edition
13
Systems Analysis and Design in a Changing World, 4th Edition
1
Types of Information Systems (continued)
Systems Analysis and Design in a Changing World, 4th Edition
1
7
1
Systems That Solve Business Problems
System
– interrelated components functioning together to achieve an outcome
1
The Analyst as a Business Problem Solver
Has
computer technology knowledge and programming expertise business problems
Understands Uses Has
logical methods for solving problems
10
System Boundary vs. Automation Boundary
1
Systems Analysis and Design in a Changing World, 4th Edition
11
1
Types of Information Systems
Transaction
processing systems (TPS)
Describe
Explain
the importance of technical, people, and business skills for an analyst why ethical behavior is crucial for a systems analyst’s career
3
Describe
Discuss
Describe
Systems Analysis and Design in a Changing World, 4th Edition
1
Overview
Information
sຫໍສະໝຸດ Baidustems
Crucial to success of modern business organizations Constantly being developed to make business more competitive Impact productivity and profits
14
1
Required Skills of the Systems Analyst
Systems Analysis and Design in a Changing World, 4th Edition
15
1
Technical Knowledge and Skills
An
analyst should have fundamental technology knowledge of
Capture and record information about organization’s transactions
Management
information systems (MIS)
Take information captured by TPS Produce reports for planning and control
12
Systems Analysis and Design in a Changing World, 4th Edition
1
Types of Information Systems (continued)
Enterprise
applications
Highly integrated systems that support company-wide operations and data Often combine aspects of TPS, MIS, DSS/KBS
Subsystem
Supersystem
subsystems
Functional
decomposition – dividing a system into smaller subsystems and components
8
Systems Analysis and Design in a Changing World, 4th Edition
Decision
support / knowledge-based systems (DSS/KBS)
Explore impact of available options or decisions (what-if scenarios) Automate routine decision making
Communication
support systems
Facilitate communication internally and with customers and suppliers
Office
support systems
Help employees create and share documents
Analyst understands SDLC techniques
Project planning, systems analysis
Systems design, database design, network design
Construction, implementation, systems support
fundamental curiosity to make things better
Wants Is
more of a business problem solver than a technical programmer
6
Systems Analysis and Design in a Changing World, 4th Edition
Systems Analysis and Design in a Changing World, Fourth Edition
1
1
Learning Objectives
Explain
the key role of a systems analyst in business the various types of systems an analyst might work on
Systems
Systems
analyst – uses analysis and design techniques to solve business problems using information technology
5
Systems Analysis and Design in a Changing World, 4th Edition
Computers / peripheral devices (hardware) Communication networks and connectivity
Database and database management systems (DBMS)
Programming languages (for example, VB.NET or Java) Operating systems and utilities
16
Systems Analysis and Design in a Changing World, 4th Edition
1
Technical Knowledge and Skills (continued)
Analyst uses tools
Software productivity packages
Information
systems – collection of interrelated components that collect, process, store, and provide as output information needed to complete tasks
– part of a larger system – larger system that contains
Analyst’s Approach to Problem Solving
Research and understand the problem Verify benefits of solving problem outweigh the costs Define the requirements for solving the problem Develop a set of possible solutions (alternatives) Decide which solution is best and recommend Define the details of the chosen solution Implement the solution Monitor to ensure desired results
2
Explain
Systems Analysis and Design in a Changing World, 4th Edition
1
Learning Objectives (continued)
Describe
the many types of technology an analyst needs to understand various job titles and places of employment where analysis and design work is done the analyst’s role in strategic planning for an organization the analyst’s role in a system development project
1
Overview (continued)
Systems
analysis – process of understanding in detail what a system should accomplish design – process of specifying in detail how components of an information system should be physically implemented
Integrated development environments (IDEs) for programming languages
CASE tools, testing, documentation support, reverse engineering, configuration management
Keys
to successful system development
Thorough systems analysis and design Understanding what business requires
4
Systems Analysis and Design in a Changing World, 4th Edition
1
Information Systems and Subsystems
Systems Analysis and Design in a Changing World, 4th Edition
9
Information Systems and Component Parts
1
Systems Analysis and Design in a Changing World, 4th Edition
13
Systems Analysis and Design in a Changing World, 4th Edition
1
Types of Information Systems (continued)
Systems Analysis and Design in a Changing World, 4th Edition