5-1 BUSI 240 Introduction to Information Systems Tuesday & Thursday 8:05am – 9:30am Wyant Lecture Hall Please sign the roster on the back table.

5-2 Smartphones weigh on mobile networks: study Smartphones weigh on mobile networks: study HELSINKI (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.laptops wireless networks Delivering the same amount of data, a smartphone typically generates eight times the network signaling load of a laptop with a data card,laptop 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… Current Events – What’s going on?

6-4 Current Events – What’s going on? Microfiber fabric makes its own electricity? 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.

5-5 Current Events – What’s going on? Microfiber fabric makes its own electricity? Microfiber fabric makes its own electricity?

5-6 Current Events – What’s going on? Microfiber fabric makes its own electricity? Microfiber fabric makes its own electricity?

6-7 Current Events – What’s going on? HP unveils TouchPad tablet, two phones Hewlett-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].

Quiz 2 5-8

5-9 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 23 rd Submit assignment via DropBox

5-10 Assignment #2 Web sites with product reviews: review.zdnet.com

5-11 Extra Credit Extra 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 article One- 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 Concepts Database Management Types of Databases Chapter 5b5b McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved.

5-13 Data Resource Management Managerial activity Applies IS technologies like data management and data warehousing to manage data resources to meet the information needs of business stakeholders

5-14 Types of databases

5-15 Operational Databases Store detailed data to support business processes Examples, customer database, inventory database

5-16 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 changes Apply changes to each distributed database Very complex Duplication One database is master Duplicate that database after hours in all locations Easier

5-17 External Databases Databases available for a fee from commercial online services or For free from World Wide Web Examples, statistical databanks, bibliographic and full text databases

5-18 Hypermedia Database Website database Consists of hyperlinked pages of multimedia (text, graphics, video clips, audio segments)

5-19 Data Warehouse Stores data that has been extracted from the operational, external and other databases Data has been cleaned, transformed and cataloged Used 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:

5-20 Data Warehouse Source: Adapted courtesy of Hewlett-Packard.

5-21 Data Mining Data in data warehouse are analyzed to reveal hidden patterns and trends Examples: Perform market-basket analysis to identify new business processes Find root causes to quality problems Cross sell to existing customers Profile customers with more accuracy

5-22 Traditional File Processing Data stored in independent files Problems: Data redundancy Lack of data integration Data dependence – files, storage devices, and software are dependent on each other Lack of data integrity or standardization

5-23 Traditional File Processing

5-24 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

5-25 Database Management Approach

5-26 DBMS Major Functions

5-27 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 requests SQL (Structured Query Language) an international standard query language Graphical Queries -- Point-and-click methods Natural Queries – similar to conversational English Report generator – quickly specify a report format for information you want printed in a report Note

5-28 Natural Language versus SQL

5-29 Graphical Query Source: Courtesy of Microsoft Corp.

5-30 Database Maintenance Updating database to reflect new business transactions such as a new sale Done by transaction processing systems with support of DBMS

5-31 Application Development Use DBMS software development tools to develop custom application programs Data Manipulation Language (DML)

Telecommunications and Networks Business value of networks The Internet Network components Chapter 6a6a McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved.

6-33 Network Concepts Network An 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

6-34 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

6-35 Telecommunications Exchange of information in any form (voice, data, text, images, audio, video) over networks

6-36 Trends in Telecommunications

6-37 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

6-38 Middleware Any programming that serves to “glue together” two separate programs

6-39 Digital Network Technologies Rapid change from analog to digital network technologies Analog: voice-oriented transmission, sound waves Digital: discrete pulse transmission Digital allows: Higher transmission speed Larger amounts of information Greater economy Lower error rates Multiple forms of communications on same circuit

6-40 Internet2 Next generation of the Internet High-performance network In use at 200 universities, scientific institutions, communications corporations

6-41 Business Value of Telecommunication Networks

6-42 The Internet Over 46 million servers (2004) 710 – 945 million users (2004) No central computer system No governing body No one owns it

6-43 Internet Service Provider ISP A company that specializes in providing easy access to the Internet For a monthly fee, you get software, user name, password and access ISPs are connect to one another through network access points

6-44 Popular uses of the Internet

6-45 Using the Internet for business

6-46 Business value of the Internet

6-47 An Intranet A network inside an organization That 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

6-48 Enterprise Information Portal

6-49 Extranet Network links that use Internet technologies To connect the Intranet of a business With the Intranets of its customers, suppliers or other business partners

6-50 Extranet Uses