Management of Information Systems: 45-870

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Management of Information Systems 45-870
Mini-3 Spring 2000
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Agenda

• Announcements
• Technology Byte Presentations
• Database Trends
• Telecommunications and Internetworking
  Technologies
• Information about Mid-Term

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Announcements

• Technology Byte Presentations
• Thursday (2/3)
• Section A Digital Agents, Hyperlinks
• Section B Alwin the Chipmunks, Cash Money
  Brothers

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Announcements

• IT Exercise II due no later than midnight this
  Friday, 2/4/00
• Submit one set of answers for your team
• You can email to me as an MS Word attachment or
  submit as hard copy
• Technology Byte Report
• Due on no later than midnight this Friday, 2/4/00
• Submit as a web page linked to your teams home
  page that you had created in the first IT exercise

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Technology Byte Presentations

• Section A
• Digital Agents
• Hyperlinks
• Section B
• Alwin the Chipmunks
• Cash Money Brothers

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The Information Technology Platform Building
Blocks
TELECOMMUNICATIONS
SOFTWARE DATA
HARDWARE
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DATABASE TRENDS

• DISTRIBUTED PROCESSING Multiple Geographical /
  Functional Systems Connected with Network
• Web Databases
• DISTRIBUTED DATABASE Data Physically Stored in
  more than one Location
• PARTIONED
• DUPLICATE

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DATABASE TRENDS

• OBJECT- ORIENTED Data and Procedures Stored
  Together can be Retrieved, Shared
• HYPERMEDIA Nodes Contain Text, Graphics, Sound,
  Video, Programs. Organizes Data as Nodes.
• MULTIDIMENSIONAL 3D (or higher) Groupings to
  Store Complex Data

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DATABASE TRENDS

• DATA WAREHOUSE Organizations Electronic Library
  Stores Consolidated Current Historic Data for
  Management Reporting Analysis

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Databases in the IT Architecture
Network Server
Data Warehouse
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The Information Technology Platform Building
Blocks
TELECOMMUNICATIONS
SOFTWARE DATA
HARDWARE
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Basic Components in a Telecommunications Network
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Telecommunications Components
Network Component
Examples
Media
Twisted-pair wire, coaxial cable, fiber optics,
microwave radio, communications satellites,
cellular phone systems, radio, infrared
Processors
Modems, multiplexers, switches, routers, hubs,
gateways
Software
Network operating systems, telecommunications
monitors, middleware
Channels
Analog/digital switched/nonswitched,
circuit/message/packet/cell switching, bandwidth
alternatives
Topology/ Architecture
LAN, WAN, VAN, VPN, Client-Server, Internetworked
Enterprise
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Telecommunications Media

• MEANS BY WHICH DATA ARE TRANSMITTED
• TWISTED PAIR ( Copper Wires)
• COAXIAL CABLE (Insulated Copper Wires)
• FIBER-OPTIC CABLE
• WIRELESS

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Telecommunications Processors

• Modems
• Multiplexers
• Switches
• Routers
• Hubs
• Gateways
• Examples
• Typical use of Telecommunications Processors
• CMUs use of Telecommunications Processors

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Communications Software

• Network Operating Systems
• Telecommunications Monitors
• Middleware

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Telecommunications Channels

• Analog vs. Digital
• Switched vs. non-switched
• Switching Alternatives
• Transmission Speed Bits per Second (BPS) or Baud
• Bandwidth Capacity of Channel Difference
  between Highest Lowest Frequencies

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Telecommunications Topologies Local Area
Network (LAN)
PC
PC
PC
Shared Printer
PC
PC
Internetwork Processor to Other Networks
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LAN Topologies
STAR
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LAN Topologies
BUS
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LAN Topologies
RING
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Wide Area Network (WAN)

• NETWORK SPANS LARGE GEOGRAPHIC DISTANCES
• CAN INCLUDE CABLE, SATELLITE, MICROWAVE
• SWITCHED LINES Route Determined by Current
  Traffic
• DEDICATED LINES Constantly Available for
  High-Volume Traffic

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Value-Added Networks (VAN) and Virtual Private
Networks (VPNs)

• VANs
• PRIVATE MULTIPATH DATA ONLY
• 3rd PARTY MANAGED
• USED BY SEVERAL ORGANIZATIONS
• SUBSCRIPTION BASIS
• VPNs

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Client-Server Networks

• Distributes computing power
• End user PC or NC are clients
• Clients interconnected by LANS to network servers
• LANs interconnected to other LANs and WANs

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Inter-networks

• Brief History of the Internet
• ARPANET, 1969
• ARPANET Milnet, 1980s the Internet
• NSFNET, 1986
• ARPANET retired 1990
• Web users, 1996 25 million
• Web users, 2000 gt 160 million
• Internet vs. Web

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Connecting to the Internet

• How to connect
• phone
• cable
• satellite
• LAN
• Types of connection services
• Internet connection providers (ISPs)
• Proprietary Content Providers (AOL)

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Internet Characteristics

• Open standards and protocols (TCP/IP)
• Asynchronous transmission of data

Information Packets
Destination
Header
Header
Header
IP Address
ROUTER
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Internet Bandwidth

• What is bandwidth important for the Internet?
• Internet Technology Bandwidths and Uses
• Modem
• ISDN
• Ethernet LAN
• Leased Lines (T1 and T3)
• ATM

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Internet Security

• Internet Commerce
• Encryption and Digital Certificates
• Firewalls

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Organizational Uses of Internetworking
Technologies

• Intranet
• Extranet

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The Inter-networked Enterprise
The Internet
Company
Intranets
Extranet
Extranet
Intranet
Intranets
Intranets
Customer
Supplier
Intranets
Extranet
Extranet
Other Company Locations
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Telecommunications Trends
More vendors, carriers, alliances, and network
services,accelerated by deregulation Internet
Growth
Industry Trends
More Internet, interconnected local
global digital networks, improved transmission
channels
Technology Trends
More electronic commerce, enterprise
collaboration, online business operations etc.
via networks
Application Trends
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Mid-Term Exam Feb. 8

• Logistics and Location
• can use laptops in GSIA 152 or use PCs in ELC or
  manually write answers in blue books
• we will use the network printer for printing
• ELC is reserved so you can print your answers
  there

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Mid-Term Exam Feb. 8

• Format
• you will have 90 minutes to complete it,
  excluding print time
• this is an individual, not team effort
• Be sure to
• ATQ answer the question!
• Be very specific and precise in your answers
  general or vague answers will not receive full
  credit
• open book, open note, open network, except
• NO E-MAILING TO CLASSMATES TO SHARE ANSWERS !!

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Mid-Term Exam Feb. 8

• Questions
• consists of 4-6 short answer questions and 1-2
  longer answer questions
• Questions have multiple parts
• short answer questions are technical (i.e.,
  definitions) and longer answer questions are
  application oriented (i.e., like in-class
  exercises, homework exercises, etc.)

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Mid-Term Exam Feb. 8

• Some Sample Technical Questions
• What are some important trends in
  micro-processors? Will micro-processor
  performance continue to improve dramatically?
  Why or why not?
• How is a relational database different than a
  traditional flat file? Provide a specific
  example to illustrate your answer.
• What is the difference between a network computer
  and a personal computer? What are the advantages
  and disadvantages of each?
• How is a primary key different from a
  concatenated key different from a foreign key?
  Provide examples to illustrate.
• What is normalization? Why is it important to
  normalize? Provide an example to illustrate.
• What is the difference between a LAN and a WAN?
  In what situations would a company prefer to use
  a LAN? a WAN?
• What is middleware and why is it an important
  technology for organizations?

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Mid-Term Exam Feb. 8

• Some Sample Application Questions
• Consider the IT called artificial intelligence.
  What is artificial intelligence? Describe how you
  think this IT will change business in the future.
  What are the business opportunities of this IT?
  What are the primary dangers, threats, or
  business challenges associated with this IT?
• Describe an effective process for companies to
  use in creating web pages in their
  intra/inter/extra/nets. That is, should they
  centralize or de-centralize the design,
  development, implementation and maintenance?
  Should they use an HTML generator or code HTML by
  hand? Should they standardize or allow autonomy
  in web design? Justify your choices.

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Mid-Term Exam Feb. 8

• Preparation and Review
• Covers material
• Discussed or presented in class
• In Chapters 4, 5, 6, and 7 of text
• In handouts (e.g., database handout, FrontPage
  handouts)
• On Course Web Site
• In in-class exercises
• Suggest outlining or organizing your material so
  you know where to find things during the exam

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Mid-Term Exam Feb. 8

• If you are unable to take the exam on Feb. 8
• you must notify me no later than Feb. 7, 2000 and
  explain why you cannot take the exam.
• I must excuse you, and we will set up a date and
  time for make up of the exam.
• Note that the make-up exam will have different
  questions than the exam administered in class
• Unexcused absences will result in a grade of zero
  on the exam