One Hierarchy Project Overview for Systems and Business Process Owners
Chapter 1 Business Information Systems: An Overview.
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Transcript of Chapter 1 Business Information Systems: An Overview.
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Management Information Systems, Second EditionEffy Oz
Chapter 1Chapter 1Business Information Business Information Systems: An OverviewSystems: An Overview
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Learning ObjectivesLearning Objectives
When you finish this chapter, you will:
Understand why information systems are essential to business.
Know how computers process data into useful information for problem solving and decision making.
Understand the functions of different types of information systems and how levels within an organization are served by different information systems.
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Learning ObjectivesLearning Objectives Understand how telecommunications and database
technology can help implement the goals of information systems.
Recognize the role of information technology in e-commerce.
Know how to evaluate information systems and their roles in organizations.
Be able to identify major ethical and societal conflicts created by widespread use of information systems.
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Information SystemsInformation Systems
Why Do People Need Information?
Individuals - Entertainment and enlightenment (meringankan)
Businesses - Decision making and problem solving Gathering (Pengumpulan) Storing (Penyimpanan) Manipulating (Manipulasi)
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Data, Information, Data, Information, and Systemsand Systems
Data vs. Information
Data A “given,” or fact; a number, a statement, or a
picture The raw materials in the production of information
Information Data that have meaning within a context Raw data or data that has been manipulated
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Data, Information,Data, Information,and Systemsand Systems
Data Manipulation
Example: customer survey Reading through data collected from a
customer survey with questions in various categories would be time-consuming and not very helpful.
When manipulated, the surveys may provide useful information.
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Data, Information,Data, Information,and Systemsand Systems
Generating Information Computer-based ISs take data as raw material, process
it, and produce information as output.
Figure 1.1 Input-process-output
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8Figure 1.2 Characteristics of useful information
Data, Information,Data, Information,and Systemsand Systems
Information in Context
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Data, Information, Data, Information, and Systemsand Systems
What Is a System? System: A set of components that work together to
achieve a common goal
Subsystem: One part of a system where the products of more than one system are combined to reach an ultimate goal
Closed system: Stand-alone system that has no contact with other systems
Open system: System that interfaces with other systems
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Data, Information,Data, Information,and Systemsand Systems
Figure 1.3 Several subsystems make up this corporate accounting system.
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Data, Information,Data, Information,and Systemsand Systems
Figure 1.4 Farmington High School is one subsystem within the Farmington school system.
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Data, Information,Data, Information,and Systemsand Systems
Information and Managers
Systems thinking Creates a framework for problem solving and
decision making. (Ciptakan suatu kerangka untuk memecahkan masalah dan pengambilan keputusan)
Keeps managers focused on overall goals and operations of business.
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Data, Information,Data, Information,and Systemsand Systems
The Benefits of Human-Computer Synergy Synergy
When combined resources produce output that exceeds the sum of the outputs of the same resources employed separately (Ketika sumber daya dikombinasikan menghasilkan keluaran/output yang melebihi jumlah dari keluaran [menyangkut] sumber daya yang sama mempekerjakan secara terpisah)
Allows human thought to be translated into efficient processing of large amounts of data
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Data, Information,Data, Information,and Systemsand Systems
Figure 1.5 Qualities of humans and computers that contribute to synergy
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Data, Information,Data, Information,and Systemsand Systems
In an organization, an information systems consists of:
Data
Hardware
Software
People
Procedures
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Data, Information,Data, Information,and Systemsand Systems
Figure 1.6 Components of an information system
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Data, Information, Data, Information, and Systemsand Systems
The Four Stages of Data Processing
Input: Data is collected and entered into computer.
Data processing: Data is manipulated into information using mathematical, statistical, and other tools.
Output: Information is displayed or presented.
Storage: Data and information are maintained for later use.
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Data, Information, Data, Information, and Systemsand Systems
Computer Equipment for Information Systems
Input devices introduce data into the IS.
The computer processes data through the IS.
Output devices display information.
Storage devices store data and information.
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Data, Information,Data, Information,and Systemsand Systems
Figure 1.7 Input-process-output-storage devices
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ISs From Recording TransactionsISs From Recording Transactionsto Providing Expertiseto Providing Expertise (keahlian) (keahlian)
Transaction Processing Systems (TPS) Record data and perform basic processing
Cash registers and ATMs
Management Information Systems (MIS) Use recorded transactions and other data
to produce information for problem solving and decision making
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ISs From Recording TransactionsISs From Recording Transactionsto Providing Expertiseto Providing Expertise
Types of MISs
Decision Support Systems (DSS) Contain models, or formulas, that manipulate
data into information Often answer “what if?” questions Group Decision Support Systems (GDSS) help
groups generate ideas, establish priorities, and reach decisions
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ISs From Recording TransactionsISs From Recording Transactionsto Providing Expertiseto Providing Expertise
Executive Information Systems (EIS) Can gather information from vast amounts of
data for high-level executives Highly useful in control and planning
Expert Systems (ES) Programmed with human expertise Can help solve problems of unstructured nature
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ISs From Recording TransactionsISs From Recording Transactionsto Providing Expertiseto Providing Expertise
Geographic Information Systems (GISS) Represents local conditions or features Allows planning, decision-making, and
monitoring of local conditions or activities
On-demand Output Managers can obtain reports tailored to their
needs at at any time
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Information Systems Information Systems in Businessin Business
ISs in Functional Business Areas
Accounting Record business transactions, produce periodic
financial statements, and create reports required by law
Finance Organize budgets, manage the flow of cash,
analyze investments, and make decisions that could reduce interest payments and increase revenues
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Information SystemsInformation Systemsin Businessin Business
Marketing
Analyze demand for various products in different regions and population groups
Human Resources
Help with record keeping and employee evaluation
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Information SystemsInformation Systemsin Businessin Business
ISs in Different Business Sectors
Manufacturing Allocate resources such as personnel, raw
material, and time Control inventory, process customer orders,
prepare production schedules, perform quality assurance, and prepare shipping documents
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Information SystemsInformation Systemsin Businessin Business
Government Tax authorities, national insurance and welfare
agencies, defense departments, economic organizations, immigration authorities
Service ISs are often the backbone of service
organizations
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Information SystemsInformation Systemsin Businessin Business
Retail Some retail stores (e.g., Wal-Mart, Kmart) now
linked to communication networks by satellite. Management can determine which items move
quickly and which do not.
New Businesses ISs have made new products and services
possible, such as credit reports and shipment tracking.
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Shared Data ResourcesShared Data Resources
Most effective way to operate: different systems share same data from same pool
Company’s database: one of the most powerful resources
Categorized and structured data can be manipulated to produce useful information
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Shared Data ResourcesShared Data Resources
Figure 1.8 Computer-based databases are an important resource for any organization
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Shared Data ResourcesShared Data Resources
Figure 1.9 Generalized concept of organization information systems
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E-CommerceE-Commerce
E-Commerce Business-to-business and business-to-
consumer transactions take place in electronic form via computer networks.
Database management online makes information cheaper to distribute.
E-commerce is now synonymous with “doing business on the Internet.”
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Why Study IS?Why Study IS?Knowledge Workers
Employers seek computer-literate professionals who know how to use information technology.
Degrees in IS Computer Science and Management Information Systems
Information Systems Careers Systems analyst, specialist in enterprise resource planning
(ERP), database administrator, telecommunications specialist, consulting, etc.
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Ethical and Societal IssuesEthical and Societal IssuesThe Not-So-Bright SideThe Not-So-Bright Side
Consumer Privacy
Organizations collect (and sometimes sell) huge amounts of data on individuals.
Employee Privacy
IT supports remote monitoring of employees, violating privacy and creating stress.
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Ethical and Societal IssuesEthical and Societal IssuesThe Not-So-Bright SideThe Not-So-Bright Side
Freedom of Speech IT increases opportunities for pornography, hate
speech, intellectual property crime, an d other intrusions; prevention may abridge free speech.
IT Professionalism No mandatory or enforced code of ethics for IT
professionals--unlike other professions.
Social Inequality Less than 20% of the world’s population have ever
used a PC; less than 3% have Internet access.