Lab 1 slides 7/25/2005

Chapter 1Slide 2 Principles of Information Systems, Fifth Edition Data vs. Information Data: raw facts or measurements Information: collection of facts organized/processed in such a way that they have value beyond the facts themselves. Adds meaning or context to achieve goal of user. Ex: Dow Jones

Chapter 1Slide 3 Principles of Information Systems, Fifth Edition Data vs. information Set of names in any order / class list Set of numbers / average score for test Set of horse names / history,odds, jockey

Fig 1.2

Chapter 1Slide 5 Principles of Information Systems, Fifth Edition Information is the derivative of manipulating, organizing, summarizing, and presenting data in a form suitable for decision-making or further analysis. - Hutchinson/Coulthard

Chapter 1Slide 6 Principles of Information Systems, Fifth Edition Principle MIS: The value of information is directly linked to how it helps decision makers achieve the organization’s goals

Chapter 1Slide 7 Principles of Information Systems, Fifth Edition The “Information Spectrum”.Omniscience.Wisdom.Knowledge.Information. Data

Data and Information characteristics Often a trade-off between some of these attributes. Which ones are critical to your application?

Chapter 1Slide 9 Principles of Information Systems, Fifth Edition Info Characteristics ANALYSIS TECHNIQUE Affect value of information Different attributes more important at different times or different applications Trade-off between attributes

Chapter 1Slide 10 Principles of Information Systems, Fifth Edition Accurate Error free measured correctly Entered correctly Interpreted correctly GIGO Program should verify data.

Chapter 1Slide 11 Principles of Information Systems, Fifth Edition Complete Has all important facts or data fields needed to achieve goals of IS. Student records system: Name, SSN, GPA, payments, course grades Medical records system? …

Chapter 1Slide 12 Principles of Information Systems, Fifth Edition Economical Worthwhile to collect, buy or produce “Value” of information vs. cost What if “tip sheet” cost $1000 ? Better be accurate and reliable! EPA Hudson River PCB samples: Cost vs. valid model

Chapter 1Slide 13 Principles of Information Systems, Fifth Edition Flexible Can be used for a variety of purposes supports different IS users goals easily transformed to another use Transferable to another application or use: Inventory levels used by: Sales staff, purchasing, production

Chapter 1Slide 14 Principles of Information Systems, Fifth Edition Reliable Always accurate/available – not just sometimes can be depended on quality is consistent

Chapter 1Slide 15 Principles of Information Systems, Fifth Edition Relevant Important to decision maker (not extraneous) captures important aspects of model can be used to problem at hand Remove non-relevant items from screens

Chapter 1Slide 16 Principles of Information Systems, Fifth Edition Simple Easy to understand Easy to manipulate

Chapter 1Slide 17 Principles of Information Systems, Fifth Edition Timely Delivered when it is needed Maximizes value Relevant in time: still contributes to goals of organization

Chapter 1Slide 18 Principles of Information Systems, Fifth Edition Verifiable Can check to see if correct Has other sources or can be “proved”

Chapter 1Slide 19 Principles of Information Systems, Fifth Edition Accessible Can be retrieved in reasonable time in correct format

Chapter 1Slide 20 Principles of Information Systems, Fifth Edition Secure Only authorized users can access easily Protected from damage (backed up)

Chapter 1Slide 21 Principles of Information Systems, Fifth Edition

Chapter 1Slide 22 Principles of Information Systems, Fifth Edition Attributes of Information Quality

Chapter 1Slide 23 Principles of Information Systems, Fifth Edition What is GIS? A Geographical Information System (GIS) is a compilation of computer hardware, software, data and personnel that collects, analyzes and presents information that is tied to a geographic location. Converts data into visual form Links geographical data with descriptive data and forms the information into layers The layers create themes that represent particular features on a map and, when combined, form a complete picture.

Chapter 1Slide 24 Principles of Information Systems, Fifth Edition Three Types of Data Spatial Made up of points lines and areas: Points- locations: buildings, customers etc. Lines- streets, rivers. elevations Areas- polygons representing states, counties, market areas etc. Tabular Lists, spreadsheets and databases Can be linked to spatial data Sales to a region Image Satellite images, aerial photographs and scanned data One layer Cannot be broken down

Chapter 1Slide 25 Principles of Information Systems, Fifth Edition Data Models Vector x,y coordinates Interconnected coordinates represent the shape of a feature. Highways, rivers etc. Raster Matrix of cells with values Satellite imagery Color-coded to create a 3 dimensional image (elevations)

Chapter 1Slide 26 Principles of Information Systems, Fifth Edition Uses Business Placement Law enforcement Emergency Response Census/Demographics Marketing Pollution remediation Medical (disease epidemiology) Facility management (utilities) &Much More!

Chapter 1Slide 27 Principles of Information Systems, Fifth Edition Links ESRI MapInfo NYS GIS Clearinghouse