Weeks 1-2 - Chapter 1: Intro to SAD

Prelim

Information Technology (IT)

Combination of hardware and software products and services that companies use to manage, access, communicate and share information

Systems Analysis and Design

Step-by-step process for developing high-quality information systems.

Systems Analyst

They plan, develop, and maintain information systems.

Data

Consists of basic facts that are the system’s raw material

Information

Information is data that has been transformed into output that is valuable to users

Information Systems

They have 5 key components:

• Hardware

• Software

• Data

• Processes

• People

Hardware

(Information System Components)

• Is the physical layer of the information system

• Moore’s law

Software

(Information System Components)

• The system and application software

• Enterprise applications

Data

(Information System Components)

• Tables store data

• Linked tables work together to supply data

Processes

(Information System Components)

• Describe the tasks and business functions that users, managers, and IT staff members perform to achieve specific results

People

(Information System Components)

• The stakeholders

• The users or end users

Enterprise Computing Systems

(Business Information Systems)

• Support company-wide operations and data management requirements

• Many hardware and software vendors target the enterprise computing market

Transaction Processing Systems

(Business Information Systems)

• Involve large amounts of data and are mission-critical systems

• Efficient because they process a set of transaction-related commands as a group rather than individually

Business Support Systems

(Business Information Systems)

• Provide job-related information to users at all levels of a company

• Management information systems (MIS)

• Radio frequency identification (RFID)

• What - if

Knowledge Management Systems

(Business Information Systems)

• Called expert systems

• Simulate human reasoning by combining a knowledge base and inference rules

• Many knowledge management systems use a technique called fuzzy logic

User Productivity Systems

(Business Information Systems)

• Technology that improves productivity

• Groupware

Information Systems Integration

(Business Information Systems)

• Most large companies require systems that combine transaction processing, business support, knowledge management, and user productivity features.

System Analyst

(Project Team Specialization)

• The system analyst assists and guides the project team so the team develops the right system in an effective way

• System analysts must understand how to apply technology in order to solve problems.

• Identify the organization improvements needed, design systems to implement those changes, and train others to use the systems

Business Analyst

(Project Team Specialization)

• Focuses on the business issues surrounding the system

• Identifies the business value that the system will create

• Helps design or improve new business processes and policies

Infrastructure Analyst

(Project Team Specialization)

• Focus on technical issues surrounding the ways the system will interact with the organization’s technical infrastructure.

• Ensures that the new information system conforms to organizational standards

• Identifies infrastructure changes

Change Management Analyst

(Project Team Specialization)

• Focus on the people and management issues surrounding the system installation

• Ensures that adequate documentation and support are available to users

• Provides user training

• Develops strategies to overcome resistance to change

Project Manager

(Project Team Specialization)

• Highly experienced system analyst

• Ensures that the project is completed on time and within budget

• Makes sure the system delivers the expected vale to the organization

Project Sponsor

• Someone who recognizes the strong business need for a system

• Make sure that the project is moving in the right direction from the perspective of the business

• Should have an idea of the business value to be gained from the system, in both tangible and intangible ways