Lesson 1 : Types of Systems

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Lesson 1Types of Systems

• Chapter 1
• Assuming the Role of the Systems Analyst

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Type of Systems
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Information systems fall into one of the
  following eight categories
• Transaction Processing System (TPS)
• Office Automation Systems (OAS)
• Knowledge Work Systems (KWS)
• Management Information Systems
• Decision Support Systems (DSS)
• Expert Systems (ES)
• Group Decision Support Systems (GDSS)
• Executive Support Systems (ESS)

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Type of Systems
3
Transaction Processing Systems
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Developed to process large amounts of data for
  routine business transactions such as payroll and
  inventory.
• Reduce the time once required to perform these
  transactions manually although people still must
  input the data.
• Computer-based versions of manual organization
  systems dedicated to handle the organizations
  transactions.

• Transactions
• Individual simple events in the life of an
  organization that contain data about
  organizational activity.

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Type of Systems
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Office Automation Systems
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Support data workers who do not usually create
  new knowledge but rather analyze information as
  to transform data or manipulate it in some way
  before sharing it with.
• It includes word processing, spreadsheets,
  desktop publishing, electronic scheduling, and
  communication through voice mail, e-mail and
  video conferencing.
• The keyword that characterizes OA is
  communication
• Capability to link people electronically for
  office work called virtual office, a term that
  suggests that office work can be done at
  virtually any geographically location as long as
  the work site is linked to one or more of the
  firms fixed locations.

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Type of Systems
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Knowledge- Work System
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Support professional workers such as scientists,
  engineers and doctors by aiding them in their
  efforts to create new knowledge and by allowing
  them to contribute it to their organization or to
  society bat large.

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Type of Systems
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Management Information System
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Supports a broader spectrum of organizational
  task.
• Requires people, software, hardware, shared
  database.
• Output is used for decision analysis and
  decision-making.

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Type of Systems
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Decision-Support System
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Emphasize the support in decision-making in all
  phases, the actual decision is still exclusive to
  the decision-maker.
• Experimental in nature, where the user tries
  different inputs to see their effects. The
  responses is used to try new inputs, and the
  process continues until a satisfactory result is
  obtained.

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Type of Systems
8
Expert System
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Known as knowledge-based system, which captures
  and uses the knowledge of an expert for solving a
  problem experienced in a business.
• Uses the approaches of AI
• Uses languages such as PROLOG, or LISP.

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Type of Systems
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Group Decision Support System
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Used in special rooms equipped in a number of
  different configurations, permit group members to
  interact with electronic support.
• Intended to bring a group together to solve a
  problem with the help of various supports such as
  polling, questionnaires, brainstorming, and
  scenario creation.
• Under general term computer supported
  collaborative work (CSCW) which include
  groupware for team collaboration.

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Type of Systems
10
Executive Support Systems
DLSU-Dasmariñas-Cavite
Systems Analysis and Design

• Help executives organize their interaction with
  the external environment by providing graphics
  and communications support in accessible places
  such as boardrooms or personal corporate offices.
• Extend and support the capabilities of
  executives, permitting them to make sense of
  their environments.

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Type of Systems