ISM 50 - Business Information SystemsLecture 12Instructors: Mary Doyle, Geoff RyderUC Santa CruzMay 11, 2009Announcements•2ndFolio Article due today•Assignment 4 out, (due Wednesday 5/20) For Wednesday, read: Messerschmitt Ch 11.1 - 11.2 (325-335)Messerschmitt Ch 15.1 - 15.2 (415-425) Presenters for Wednesday 5/13Matthew VillarrealXuanyu Pang Midterms back on WednesdayToday’s Class Review of midterm Data base project overview Student presentations Business paper proposals and research Architecture: Modularity and Layering Computer and Communications IndustriesReview of MidtermDatabase Assignment-- see assignment, posted-- TA Lei Yang has signups for lab sessions to help you learn MS Access and complete the project. There’s room for about 40 students per session, so we will have signup sheets at Wed. lecture for each of 4-5 sessions, depending on demand. -- You may be able to read MS Access help and do the lab on your own.-- Come early Wed. to sign up for your first choice of lab times. We may offer additional labs if there is demand for them; let us know.Student PresentationsLarry TseJulian ChytrowskiBusiness paper proposals Characterize our HBS/Stanford case studies:Frito-Lay, Cisco: companies invest in ERP systems to gain a competitive advantage in traditional marketsAlibris: a business designed from scratch around web technology. They invest in IT to build an ecommerce business as an intermediarySun, MySQL: IT supplier companies that build systems to make their customers more competitive. As a supplier, their own competitiveness depends on the price/performance of their productsBusiness paper proposals Like Frito-Lay, Cisco: investment in ERPBest Buy Best Western Christian Dior Coca-Cola Costco DellExxon Mobile Fedex Hampton FitnessJoie de Vivre Mary Kay McDonaldsNike Plantronics 7-ElevenSiemens Southwest Air ToyotaVerizon Walmart Walt DisneyBusiness paper proposals Like Alibris: web-focused; or an ecommerce intermediary business model seeking a network effectAmazon Apple? Borders?Charles Schwab Citibank? CraigslisteBay Google NetflixOverstock.com Skype Wells Fargo?WikipediaBusiness paper proposals Like Sun and MySQL: IT SuppliersEA Games MediatekNuance Dragonspeak OraclePixarBusiness proposal feedback: citing sourcesNo plagiarism:More than thirty words verbatim must be cited.Any facts or figures that are not your own must be cited in the body of the text.Sun’s servers ranged in price from $14,000 to over $1 million and had an estimated 65 % gross margin, while the company’s workstations were priced at an average of $15,000 and had an estimated gross margin of only 38 percent [1].References[1] Brent Schlender, "Javaman: The Adventures of Scott McNealy," Fortune Magazine, 138 (17) October 13, 1997. Pages 34 – 41.[2] ...Citing Sources: “print citations”“Semiconductors have found a place in virtually every electronic device in existence. This helps explain why the industry was able to reach $200 billion in sales before a slump brought the figure back down in 2001. [1]. By 2003, chip sales rebounded and actually exceeded $200 billion [2].References[1] “Semiconductor Trends”, Silicon Valley Tech Week, August 9, 1999, page 81.[2] http://www.chipsonline.com/2003/march.aspWe are looking for five or more print-style citations among all the citations in the References section at the end of your paper. (A print source can also be published on the web.)Print citationNot a print citationCiting Sources Use Wikipedia as an encyclopedia: it is a pointer to sources you cite, not a source itself. We’ll accept one or two Wikipedia citations out of hopefully 15 – 25+ citations in the References section containing your end notes. The easiest way to lose points on your paper is to not cite sources! A guide is posted on the class website to help you cite your sources correctly:http://www.soe.ucsc.edu/classes/ism050/Spring09/cite.htmlBusiness paper research (1) Company Website The company's own website is a reasonable place to start. Example: Walgreen's Drugs. www.walgreens.comCompany information --> Investor relations. Business paper research ideas (2) UCSC Library web resources http://library.ucsc.edu/research.htmlhttp://library.ucsc.edu --> Research --> How to Find Articles --> Business --> Company http://library.ucsc.edu/collect/businessweb.html#CompanyLexisNexis tutorial: Zimmerman's company research guide.LexisNexis start page: http://www.lexisnexis.com/us/lnacademic --> Business Tab Specific articles: http://library.ucsc.edu/ --> Online Journals List Economist, Wall Street Journal, Wired,... Business paper research ideas (3) Private Company Research Business Week Research Tools: Companies and Industry Sector http://investing.businessweek.comhttp://en.wikipedia.org/wiki/Walgreens UNC Libraries references: http://www.lib.unc.edu/subjectguides/private_company/rankings.htmlLibrary of Congress http://www.loc.gov/rr/business/company/private.htmlBusiness paper research ideas (4) Google Scholar search for "Walgreens drugs" Note Ranking Order: Porter article! & Walgreen's case study. (citations & salience) "Walgreen's Drug Dilemma" from Forbes. Use "UC-eLinks" OR online journals. Try "Recent Articles", set to 2008: Or, add "electronic prescriptions" to see articles including this topic.Text, Chapter 6: Modularity and Layering6.1. Software complexity6.2. Modularity6.3. Software layering6.4. Good architectures, based on layeringModularity: Implements Ch. 4 Architectural Design Principles“Getting the architecture right is the most important step in the conceptualization and design of any system because it is the hardest aspect to change and it influences everything that follows.The architecture is also the frontline defense against complexity, which is the most important limitation to what can be accomplished in software.”From Understanding Networked ApplicationsBy David G Messerschmitt. Copyright 2000. See copyright noticeLet’s boil Ch. 6 down to 14 terms you’ll need to understand:decomposition granularityhierarchy actioninterface data typeprotocol layeringfragmentation data integrityhorizontal structure spanning layerabstraction encapsulationFun example: a modular architectureConceptualizationWhat is it you are trying to do?Example Concept:Small HHC for flight attendants.HHC tells flight