ITEC 1010 Chapter Notes - Chapter 6: Decision Support System, Direct-Sequence Spread Spectrum, Personnel Selection

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Published on 12 Apr 2013
School
York University
Department
Information Technology
Course
ITEC 1010
Chapter 6: Information and decision support system
why learn?
Helping you and your coworkers make more informed decisions
find the least expensive way to ship products to market and to solve bottlenecks
management information system (MIS) must provide the right information to the right
person in the right format at the right time
a scheduled report, a demand report, a drill down report, key-indicator report, and an
exception report.
Decision support system (DSSs) are used when the problems are unstructured
Decision making and problem solving
strategic planning and overall goals of the organization set the course for decision making
information systems assist with problem solving, helping people make better decision
decision making phase
intelligence stage: identify and define potential problems or opportunities
design stage: develop alternative solutions to the problem and evaluate their feasibility
choice stage: requires selecting a course of action
problem solving: A process that goes beyond decision making to include the implementation
stage.
Programmed decision vs non programmed decision
programmed decision
made using a rule, procedure, or quantitative method
easy to computerize using traditional information systems
non programmed decision
decision that deals with
3 approaches to find solutions
optimization model
A process to find the best solution, usually the one that will best help the organization
meet its goals.
Ex: consider all cities/towns to find the location that best meets the requirements
satisfying model
A model that will find a good—but not necessarily the best—solution to a problem.
Ex: Consider a manageable number of cities that might satisfy the company's
requirements
Heuristics
Rules of thumb,” or commonly accepted guidelines or procedures that usually find a
good solution.
Ex: consider cities that are friendly new
Benefits
performance of decision support system is typically a function of decision quality and
problem complexity
Decision quality can result in increased effectiveness, increased efficiency, higher
productivity
Problem complexity depends on how hard the problem is to solve and implement
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Overview
MIS(management information system) is an integrated collection of people, procedures,
databases, and devices that provides managers and decision makers with information
purpose of MIS
to help achieve organizational goals
providing the right information to the right people in the right format and at the right
time
transaction can enter the organization
inputs
internal data sources include
TPS and ERP systems and related databases
External sources of data include
customers, suppliers, competitors, and stockholders whose data is not already captured
by TPS and ERP systems, as well as other sources, such as the Internet
output
scheduled report: A report produced periodically, such as daily, weekly, or monthly.
key-indicator report: A summary of the previous day’s critical activities, typically available
at the beginning of each workday.
demand report: A report developed to give certain information at someone’s request rather
than on a schedule.
exception report: A report automatically produced when a situation is unusual or requires
management action.
drill-down report: A report providing increasingly detailed data about a situation.
Characteristics of a Management Information System
Provide reports with fixed and standard formats
Produce hard-copy and soft-copy reports
Use internal data stored in the computer system
Allow users to develop custom reports
Require user requests for reports developed by systems personnel
financial MIS
provides financial info to executives and others
financial forecasting
profit/loss and cost systems
auditing: internal & external
uses and management of funds
manufacturing MIS
used to monitor and control the flow of materials, products, and services through the
organization
as raw materials are converted to finished goods, the manufacturing MIS monitors the
process at almost every stage
common information
design and enginerring
master
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Document Summary

Benefits performance of decision support system is typically a function of decision quality and problem complexity: decision quality can result in increased effectiveness, increased efficiency, higher productivity. Problem complexity depends on how hard the problem is to solve and implement. Programmed decision vs non programmed decision programmed decision: made using a rule, procedure, or quantitative method, easy to computerize using traditional information systems non programmed decision, decision that deals with. Marketing mis supports managerial activities in product development, distribution, pricing decisions, promotional effectiveness, and sales forecasting. An institutional dss is used repeatedly and refined over the years. Comparison of dss and mis the type of problems solved the support given to users the decision making is different (manually, automatically) Characteristics of a gss that enhance decision making. Flexibility: decision-making support, anonymous input, reduction of negative group behavior, automated record keeping.

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