Chapter 1/2 Flashcards

0
Q

What is a system?

A

Set of related components that produce specific results.

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1
Q

What does RADDI stand for?

A
Requirements
Analysis
Design
Development 
Implement
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2
Q

Mission-critical system:

A

System that is vital to a company’s operations.

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3
Q

Data:

A

Basic facts that are the systems raw material.

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4
Q

Information:

A

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

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5
Q

5 components of information systems and their definitions:

A
  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”
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6
Q

Stakeholders:

A

Include:

  • management of info. System
  • users inside/outside company who use the system.
  • IT staff members.
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7
Q

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

A

B2C: business selling to consumers( retail)

B2B: purchasing and data exchange between businesses.

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8
Q

Enterprise computing:

A

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.

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9
Q

Transaction processing (TP) system:

A

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

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

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10
Q

Business Support Systems:

A

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.

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11
Q

Knowledge management systems:

A

Also called “expert systems”

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

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12
Q

Knowledge base:

A

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

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13
Q

Inference rules:

A

Logical rules that identify data patterns and relationships.

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14
Q

User productivity systems:

A

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

Ex: email, word processing, groupware.

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15
Q

Know the information hierarchy. Duh.

A

Look at notes.

16
Q

Modeling:

A

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

17
Q

Business model (requirements model):

A

Describes the information that a system must provide.

18
Q

Data model:

A

Describes data structures and design.

19
Q

Object model:

A

Describes objects which combine data and processes.

20
Q

Prototype:

A

Early working version of an info system.

21
Q

Computer-Aided Systems engineering (CASE):

A

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

22
Q

Systems development methods:

A

Structured analysis

Object-oriented (O-O) analysis

Agile/adaptive methods

Idk look in the book for this shit.

23
Q

Systems development life cycle (SDLC model):

A

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

24
Q

Waterfall model of SDLC:

A

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

25
Q
  1. Systems planning phase:
A

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

26
Q
  1. Systems analysis phase:
A

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

27
Q

3.Systems design phase:

A

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

28
Q
  1. Systems implementation:
A

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

29
Q
  1. Systems support and security.
A

IT helps maintain, enhance, and protect the system.

30
Q

Agile Methods:

A

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

31
Q

Business Case:

A

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?
32
Q

System request:

A

Formal way of asking IT for support.

Ex: propose enhancements, correction of issues, etc.

33
Q

Feasibility:

A

Is it realistic, do we need it, is it cost effective, is there a better way? Etc.

You know what this is, generally.

34
Q

Moore’s Law

A

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