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Welcome to IST 210: Organization of Data

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1 Welcome to IST 210: Organization of Data

2 Teaching Team Zihan Zhou TA: Jian-Syuan Wong
Office hour: 3-4pm Monday or by appointment Office: 320 IST Building TA: Jian-Syuan Wong Office hour: 3:45-4:45pm Thursday Location: 321D IST Building IST210

3 Course Website Log into your ANGEL
You will see all course information on wikispace IST210

4 Why Should You Take This Course?
It is required! Pre-requisite for other advanced courses Why did IST make this course required? Importance in organizing data, information, and knowledge Database User Interface Information Privacy IST210

5 Organization of the data is important
Have you ever thought about how the data is organized behind these systems? Class schedule system: Online shopping system: Huge amount of data need to be well organized: we need a database to efficiently and accurately modify and query the data UPS Technology IST210

6 Organization of the data is important
Web 2.0 Web 1.0 vs. Web 2.0 How to deliver Web-2.0 services? The central piece -- database Manage complicated data video clips, users, comments, tags, … profiles, photos, music, comments, … User interface Web service: search and data retrieval IST210

7 Using Data for Competitive Advantage
Success of companies relies on Data: Wall Street companies Flow of data: FedEx and UPS Capabilities to extract information from data “What Wal-Mart Knows About Customers' Habits” "And the pre-hurricane top-selling item was _______.“ -- Linda M. Dillman, Wal-Mart's chief information officer beer IST210

8 What is This Course About?
Database An effective and efficient way to organize data Key issues that will be covered in this course How to design a database? Relational Database, E-R Diagram How to query a database? SQL How to build a website connecting with database? HTML, PHP, web server… Examples of course projects in previous classes IST210

9 How Will This Course Be Taught?
Classes 11:15 AM – 12:05 AM Monday, Wednesday and Friday in IST Room 110 Lecture, discussion, in-class exercise, projects Lab 2:30 PM – 3:45 PM Wednesday in IST Room 202 Programming, projects Semester-long project Group project on an idea developed by your group. IST210

10 Readings for Lectures Textbook: Database Concepts by Kroenke & Auer/ Pearson/ , 6th edition Additional readings will be provided – always check the latest schedule on course website! Previous editions: content should be similar, assignments might be different IST210

11 In Classes Attendance Attendance is required for every class! Attendance check: 5% in final grading Quiz in class (for attendance check only) If you are not able to attend class with reasonable excuse, instructor or TA should be notified before class Class rule: Computers will be taken control during lecture time IST210

12 After Classes Study groups strongly encouraged
Discuss general approaches, not the way to solve the problems Assignments and exams should be finished independently Project will be carried as a team (4 persons) Keep track of up-to-date IT news and events See how they can be related to this course IST210

13 Labs Led by TA Individual programming exercises Team project
Programming, projects Individual programming exercises Only 5% in final grading Team project A website connecting with database IST210

14 Project A web-based database system to demonstrate what you have learnt Data organization to facilitate Information access Information organization and management Innovation is strong encouraged! Group will be assigned based on your technical backgrounds Finish the survey on ANGEL before next class! Group size: 4 students IST210

15 Project (cont.) Five stage progress reports One final report
Each has a very specific problem related to the project One final report Put all progress reports together Make changes based on suggestions from TA and me Include the final result of your design Screen shots of your service URL pointing to your database Final in-class presentation IST210

16 Project (cont.) Database design
Coding is an integral part of the class PHP: HyperText Preprocessor HTML: HyperText Markup Language Templates and examples will be provided No coding experience Work hard Start early Don’t panic, we will help you come to office hour and come to the lab! IST210

17 Coding in Fun IST210

18 Grading Homework: 15% Exams: 40% = 15% (Midterm) + 25% (Final)
Project: 35% Lab: 5% Class attendance: 5% IST210

19 Grading: Homework Total five homework assignments: 3%*5 = 15%
Due: one week after an assignment is given Must submit online through ANGEL before deadline Cut-off time on ANGEL: midnight Strict late submission penalty After the deadline but less than 24 hours: penalized 10% More than 24 hours but less than 48 hours late: penalized 30% No submissions are accepted more than 48 hours late Independent work! Do not exchange your answers with your classmates! Do not search for solutions online! IST210

20 Grading: Exam Midterm (15%): Chapter 1-3
Final Exam (25%): Everything we covered in class, with more focus on Chapter 4-5 IST210

21 Grading: Project Group grade 3% for each progress report (total 15%)
10% for the final report 10% for the final presentation Individual adjustment For each report: 30% is related to individual contribution and involvement. Done your part of work: 15% Participation: 15% IST210

22 Some Challenges You Will Face …
Programming HTML, PHP, SQL Do not worry about grading if zero experience 5% lab Programming in projects are done as a team No programming in assignments, midterm exam and final Individual homework assignments Some are time-consuming Make good use of the office hours Team project This project is not something you can finish within 3 days, not even 3 weeks! Team work is the key. IST210

23 Policy Academic Integrity University policy
Individual assignments must be completed independently. Students are strongly encouraged to form study groups and to learn from peer students. However, discussion on homework questions in study group should be limited to general approaches to solutions. Specific answers should never be discussed. Penn State's policy regarding Academic Integrity must be followed. University policy IST210

24 Question? IST210

25 Chapter 1. Introduction to Database

26 Purpose of a Database The purpose of a database is to keep track of things Unlike a list or spreadsheet, a database may store information that is more complicated than a simple list IST210

27 Mini Case You are designing our course selection system
What aspects you need to store a record? Student ID, Student Name, Student's Department, CourseID, Instructor, CourseName , Location What questions (i.e. queries) will users ask? Student: What class I have registered for this semester? Instructor: How many students are registered and what are their backgrounds? What tool would you use to manage the data? Excel? IST210

28 An Example List Can you see any potential problem when using this list? IST210

29 Problems with Lists: Redundancy
In a list, each row is intended to stand on its own. As a result, the same information may be entered several times If there are 40 students taking IST210, class information like “CourseID” will be entered 40 times. IST210

30 Problems with Lists: Multiple Themes
In a list, each row may contain information on more than one theme. As a result, needed information may appear in the lists only if information on other themes is also present Student info Course info IST210

31 List Modification Issues
Redundancy and multiple themes create modification problems Deletion problems Update problems Insertion problems IST210

32 List Modification Issues: Delete
Delete: Kate drops 230 Problem: Information about Kate AND IST 230 will be lost IST210

33 List Modification Issues: Update
Update: IST210 Location Changed Problem: Need to update multiple rows IST210

34 List Modification Issues: Insert
Insert: A new course with no student registered yet IST210

35 List Modification Issues: Insert
Insert: A new course with no student registered yet Problem: blank cells for student information IST210

36 A Long List to Several Small Lists
Two themes: Student, Course INFORMATION LOSS! Registration information is not in Student and Course tables IST210

37 A Long List to Several Small Lists
Two themes: Student, Course PROBLEMS! One cell does NOT allow multiple values. (IMPORTANT! This rule is strictly enforced in database.) IST210

38 A Long List to Several Small Lists
Three themes: two entities and one relationship Course Entity Student Entity Student-Course Relationship IST210

39 A Long List to Several Small Lists
Student Revisit previous issues: Insert: A new student not taking any class Update: IST210 location changed Delete: Kate drops 230 Course Key points in splitting: 1. A table must be connected with other table(s) through shared column(s) Student  (StudentID)  Registration Course  (CourseID)  Registration 2. One cell can only have one value Registration Use above criteria to check whether you split the tables correctly! IST210

40 Exercise What are the problems with this table.
Split it into multiple tables. Check whether you split the table correctly. IST210

41 Next Class on Wednesday
Introduction to data and database (cont.) HTML basics Lab exercise after class: IST webspace and a simple personal webpage IST210

42 Remember Complete Programming Skill Survey on ANGEL! IST210

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