Chapter 1/2

Question 0

What is a system?

Answer 0

Set of related components that produce specific results.

Question 1

What does RADDI stand for?

Answer 1

Requirements
Analysis
Design
Development 
Implement

Question 2

Mission-critical system:

Answer 2

System that is vital to a company’s operations.

Question 3

Data:

Answer 3

Basic facts that are the systems raw material.

Question 4

Information:

Answer 4

Data that has been transformed into output that is valuable to users.

Question 5

5 components of information systems and their definitions:

Answer 5

1. Hardware: consists of everything in the physical layer of the information system.
2. Software: programs that control the hardware and produce the desired information or results. Consists of system software and application software.
3. Data: raw material information system uses to be transformed into useful information.
4. Processes: describe the tasks and business functions that users, managers, and IT staff members perform to achieve specific results.
5. People: people who have an interest in an information system. AKA “stakeholders”

Question 6

Stakeholders:

Answer 6

Include:

• management of info. System
• users inside/outside company who use the system.
• IT staff members.

Question 7

Business-to-consumer and business-to-business E-commerce:

Answer 7

B2C: business selling to consumers( retail)

B2B: purchasing and data exchange between businesses.

Question 8

Enterprise computing:

Answer 8

Information systems that support company-wide operations and data management requirements.

Examples: Wal-Mart’s inventory system, Boeing’s production control system, Hilton Hotels’ reservation system.

Question 9

Transaction processing (TP) system:

Answer 9

Systems that process data generated by day-to-day business operations.

Examples: Customer order processing, accounts receivable, warranty claim processing.

Question 10

Business Support Systems:

Answer 10

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

Analyze transactional data, generate info needed to manage and control business processes and provide info that leads to better decision making.

Question 11

Knowledge management systems:

Answer 11

Also called “expert systems”

Simulate human reasoning by combining a knowledge base and inference rules that determine that determine how knowledge is applied.

Question 12

Knowledge base:

Answer 12

Large database that allows users to find info by entering keywords or questions in normal English phrases.

Question 13

Inference rules:

Answer 13

Logical rules that identify data patterns and relationships.

Question 14

User productivity systems:

Answer 14

Provide employees of all levels an array of tools to improve job performance.

Ex: email, word processing, groupware.

Question 15

Know the information hierarchy. Duh.

Answer 15

Look at notes.

Question 16

Modeling:

Answer 16

Produces a graphical representation of a concept of process that developers that analyze, test, and modify.

Question 17

Business model (requirements model):

Answer 17

Describes the information that a system must provide.

Question 18

Data model:

Answer 18

Describes data structures and design.

Question 19

Object model:

Answer 19

Describes objects which combine data and processes.

Question 20

Prototype:

Answer 20

Early working version of an info system.

Question 21

Computer-Aided Systems engineering (CASE):

Answer 21

Technique that uses powerful software to help systems develop and maintain information systems. Provide framework for systems development.

Question 22

Systems development methods:

Answer 22

Structured analysis

Object-oriented (O-O) analysis

Agile/adaptive methods

Idk look in the book for this shit.

Question 23

Systems development life cycle (SDLC model):

Answer 23

Series of phases to create a information system, Broken down into:

1. systems planning
2. Systems analysis
3. systems design
4. implementation
5. support and security.

-Dr . D version of this is RADDI

Question 24

Waterfall model of SDLC:

Answer 24

Result of each phase called a deliverable (or end product) that flows into the next phase.

Question 25

1. Systems planning phase:

Answer 25

Begins with formal request to IT (systems request) which describes problems of desired changed in an info system.

Question 26

2. Systems analysis phase:

Answer 26

Purpose is to build a logical model of the new system.

Question 27

3.Systems design phase:

Answer 27

Creation of a physical model that will satisfy the requirements for the proposed system.

Question 28

4. Systems implementation:

Answer 28

System is constructed. Programs written, tested, documented, system is installed.

Question 29

5. Systems support and security.

Answer 29

IT helps maintain, enhance, and protect the system.

Question 30

Agile Methods:

Answer 30

Attempt to developer a system incrementally by building s series of prototypes and constantly adjusting them to user requirements. Does not follow structured path.

Question 31

Business Case:

Answer 31

Reasons or justification for a proposal . - why are we doing this project? - what is the project about? - how does this solution address key business issues?

Question 32

System request:

Answer 32

Formal way of asking IT for support. Ex: propose enhancements, correction of issues, etc.

Question 33

Feasibility:

Answer 33

Is it realistic, do we need it, is it cost effective, is there a better way? Etc. You know what this is, generally.

Question 34

Moore's Law

Answer 34

Accurately predicted that computer processing power would double every 18-24 months.