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BUSI 240Introduction to Information Systems

Tuesday & Thursday 8:05am – 9:30am

Wyant Lecture Hall

Please sign the roster on the back table.

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Smartphones weigh on mobile networks: studyHELSINKI (Reuters) - A smartphone generates much less mobile data traffic than a laptop with a data card, but phones impose a load on the network which is much larger than anticipated, a study showed on Wednesday.

A boom in mobile data traffic -- boosted by laptops and smartphones -- is putting unprecedented stress on wireless networks around the world.

Delivering the same amount of data, a smartphone typically generates eight times the network signaling load of a laptop with a data card,

Current Events – What’s going on?

Google to Sink Big Bucks in Massive Offshore Wind Project

An ambitious proposal to build an offshore wind installation in the Atlantic Ocean that would deliver power to approximately 1.9 million households gained considerable financial support yesterday, when Google and Good Energies, a New York-based investment firm that specializes in renewable energy… http://www.reuters.com/article/idUS253507592420101012

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Current Events – What’s going on?

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Current Events – What’s going on?

Microfiber fabric makes its own electricity? CHICAGO (Reuters) - U.S. scientists have developed a microfiber fabric that generates its own electricity, making enough current to recharge a cell phone or ensure that a small MP3 music player never runs out of power.http://www.reuters.com/article/technologyNews/idUSN1334900820080213?feedType=nl&feedName=ustechnology

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Current Events – What’s going on?Microfiber fabric makes its own electricity?

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Current Events – What’s going on?Microfiber fabric makes its own electricity?

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Current Events – What’s going on?HP unveils TouchPad tablet, two phonesHewlett-Packard showed the fruits of its acquisition of Palm on Wednesday.

The technology giant demonstrated a new tablet device and two new smartphones, as well as disclosing plans to bring its webOS software to computers and printers.

…. HP uses its own operating system, called webOS. HP highlighted what it said were several advantages over the market-share-leading iPad.

…the TouchPad pioneers new technology from Qualcomm, the silicon chip manufacturing giant. The dual-core 1.2-gigahertz processor is "screaming fast,"

HP executives also touted the software's ability to simultaneously run multiple applications [Multi-tasking].http://www.cnn.com/2011/TECH/mobile/02/09/hp.webos/index.html

Quiz 2

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Assignment #2

Select a product to evaluate: Digital camera Cell phone MP3 player Car Computer

Follow the steps on the spreadsheet to evaluate three models of the product

Due February 23rd Submit assignment via DropBox

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Assignment #2

Web sites with product reviews:www.cnet.comwww.consumerreports.orgwww.consumersearch.comwww.epinions.comreview.zdnet.comwww.consumerreview.com

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Extra CreditExtra Credit, four (4) points, will be received for an

appropriate Current Events submission.The Current Event must be relevant to the class and

include the following:One to two paragraphs summarizing the articleOne- to two sentences identifying why the article is

relevant to the class.If the current event is relevant and used in class, you

will receive four (4) extra credit points.There is a maximum of five (5) Current Event

submissions.

Data Resource Management

Data ConceptsDatabase Management

Types of Databases

Chapter

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McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved.

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Data Resource Management

Managerial activityApplies IS technologies like data management

and data warehousing to manage data resources to meet the information needs of business stakeholders

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Types of databases

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Operational Databases

Store detailed data to support business processes

Examples, customer database, inventory database

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Distributed Databases

Copies or parts of databases on servers at a variety of locations

Challenge: any data change in one location must be made in all other locations

Replication: Look at each distributed database and find changesApply changes to each distributed databaseVery complex

DuplicationOne database is masterDuplicate that database after hours in all locationsEasier

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External Databases

Databases available for a fee from commercial online services or

For free from World Wide WebExamples, statistical databanks, bibliographic

and full text databases

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Hypermedia Database

Website databaseConsists of hyperlinked pages of multimedia

(text, graphics, video clips, audio segments)

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Data Warehouse

Stores data that has been extracted from the operational, external and other databases

Data has been cleaned, transformed and catalogedUsed by managers and professionals for

Data mining, Online analytical processing, Business analysis, Market research,Decision support

Data mart is subset of warehouse for specific use of department

Note:

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Data Warehouse

Source: Adapted courtesy of Hewlett-Packard.

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Data Mining

Data in data warehouse are analyzed to reveal hidden patterns and trends

Examples:Perform market-basket analysis to identify new

business processesFind root causes to quality problemsCross sell to existing customersProfile customers with more accuracy

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Traditional File Processing

Data stored in independent filesProblems:

Data redundancyLack of data integrationData dependence – files, storage devices, and

software are dependent on each otherLack of data integrity or standardization

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Traditional File Processing

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Database Management Approach

Consolidate data into databases that can be accessed by different programs

Use a database management system (DBMS)DBMS serves as interface between users and

databases

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Database Management Approach

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DBMS Major Functions

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Database Interrogation

End users use a DBMS by asking for information via a query or a report generator

Query language – immediate responses to ad hoc data requestsSQL (Structured Query Language) an international

standard query languageGraphical Queries -- Point-and-click methodsNatural Queries – similar to conversational English

Report generator – quickly specify a report format for information you want printed in a report

Note

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Natural Language versus SQL

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Graphical Query

Source: Courtesy of Microsoft Corp.

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Database Maintenance

Updating database to reflect new business transactions such as a new sale

Done by transaction processing systems with support of DBMS

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Application Development

Use DBMS software development tools to develop custom application programs

Data Manipulation Language (DML)

Telecommunications and Networks

Business value of networksThe Internet

Network components

Chapter

6a

McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved.

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Network Concepts

NetworkAn interconnected chain, group or system

Number of possible connections on a network is N * (N-1)Where N = number of nodes (points of

connections on the network)Example, if there are 10 computers on a

network, there are 10 * 9 = 90 possible connections

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Metcalfe’s Law

The usefulness of a network equals the square of the number of users

On a small network, a change in technology affects technology only

On a large network like the Internet, a change in technology affects social, political and economic systems

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Telecommunications

TelecommunicationsExchange of information in any form (voice,

data, text, images, audio, video) over networks

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Trends in Telecommunications

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Open Systems

Information systems that use common standards for hardware, software, applications and networks

Internet networking technologies are a common standard for open systems

Connectivity: Ability of networked computers to easily access and

communicate with each other and share information Interoperability:

The ability of an open system to enable end user applications to be accomplished using different varieties of computer systems, software packages, and databases provided by a variety of interconnected networks

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Middleware

Any programming that serves to “glue together” two separate programs

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Digital Network Technologies

Rapid change from analog to digital network technologies

Analog: voice-oriented transmission, sound waves

Digital: discrete pulse transmissionDigital allows:

Higher transmission speedLarger amounts of informationGreater economyLower error ratesMultiple forms of communications on same circuit

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Internet2

Next generation of the InternetHigh-performance networkIn use at 200 universities, scientific

institutions, communications corporations

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Business Value of Telecommunication Networks

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The Internet

Over 46 million servers (2004)710 – 945 million users (2004)No central computer systemNo governing bodyNo one owns it

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Internet Service Provider

ISPA company that specializes in providing easy

access to the InternetFor a monthly fee, you get software, user name,

password and accessISPs are connect to one another through

network access points

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Popular uses of the Internet

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Using the Internet for business

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Business value of the Internet

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An Intranet

A network inside an organizationThat uses Internet technologies (such as Web

browsers and servers, TCP/IP protocols, HTML, etc.)

To provide an Internet-like environment within the organization

For information sharing, communications, collaboration and support of business processes

Protected by security measures Can be accessed by authorized users through

the Internet

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Enterprise Information Portal

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Extranet

Network links that use Internet technologiesTo connect the Intranet of a businessWith the Intranets of its customers, suppliers or

other business partners

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Extranet Uses