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Welcome to IST 210: Organization of Data. Teaching Team Zihan Zhou – Office hour: 3-4pm Monday or by appointment – Office: 320 IST Building TA: Jian-Syuan.

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Presentation on theme: "Welcome to IST 210: Organization of Data. Teaching Team Zihan Zhou – Office hour: 3-4pm Monday or by appointment – Office: 320 IST Building TA: Jian-Syuan."— Presentation transcript:

1 Welcome to IST 210: Organization of Data

2 Teaching Team Zihan Zhou – 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 IST2102

3 Course Website IST2103 Log into your ANGEL You will see all course information on wikispace

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 IST2104 Database User Interface Information Privacy

5 Organization of the data is important Have you ever thought about how the data is organized behind these systems? – Class schedule system: http://schedule.psu.eduhttp://schedule.psu.edu – Online shopping system: www.amazon.comwww.amazon.com Huge amount of data need to be well organized: we need a database to efficiently and accurately modify and query the data – UPS Technology UPS Technology IST2105

6 Organization of the data is important Web 2.0 – http://www.youtube.com http://www.youtube.com Web 1.0 vs. Web 2.0 How to deliver Web-2.0 services? – The central piece -- database Manage complicated data – Youtube.com: video clips, users, comments, tags, … – Facebook.com: profiles, photos, music, comments, … – User interface – Web service: search and data retrieval IST2106

7 beer 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”What Wal-Mart Knows About Customers' Habits "And the pre-hurricane top-selling item was _______.“ -- Linda M. Dillman, Wal-Mart's chief information officer 7IST210

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 – http://www.youtube.com/channel/UCLTMn5zyFv-AZ3- gxwj-OxA/videos http://www.youtube.com/channel/UCLTMn5zyFv-AZ3- gxwj-OxA/videos IST2108

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. IST2109

10 Readings for Lectures Textbook: Database Concepts by Kroenke & Auer/ Pearson/ 978-0132742924, 6 th edition Additional readings will be provided – always check the latest schedule on course website! Previous editions: content should be similar, assignments might be different IST21010

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 IST21011

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 IST21012

13 Labs Led by TA – Programming, projects Individual programming exercises – Only 5% in final grading Team project – A website connecting with database IST21013

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 IST21014

15 Project (cont.) Five stage progress reports – 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 IST21015

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! IST21016

17 Coding in Fun IST21017

18 Grading Homework: 15% Exams: 40% = 15% (Midterm) + 25% (Final) Project: 35% Lab: 5% Class attendance: 5% IST21018

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! IST21019

20 Grading: Exam Midterm (15%): Chapter 1-3 Final Exam (25%): Everything we covered in class, with more focus on Chapter 4-5 IST21020

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% IST21021

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. IST21022

23 Policy Academic Integrity – 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 – http://www.psu.edu/dept/oue/aappm/R-6.html http://www.psu.edu/dept/oue/aappm/R-6.html IST21023

24 Question? 24IST210

25 Chapter 1. Introduction to Database IST21025

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 IST21026

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, Email 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? IST21027

28 An Example List IST21028 Can you see any potential problem when using this list?

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. IST21029

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 IST21030 Student info Course info

31 List Modification Issues Redundancy and multiple themes create modification problems – Deletion problems – Update problems – Insertion problems IST21031

32 List Modification Issues: Delete IST21032 Delete: Kate drops 230 Problem: Information about Kate AND IST 230 will be lost

33 List Modification Issues: Update IST21033 Update: IST210 Location Changed Problem: Need to update multiple rows

34 List Modification Issues: Insert IST21034 Insert: A new course with no student registered yet

35 List Modification Issues: Insert IST21035 Insert: A new course with no student registered yet Problem: blank cells for student information

36 A Long List to Several Small Lists IST21036 Two themes: Student, Course INFORMATION LOSS! Registration information is not in Student and Course tables

37 A Long List to Several Small Lists IST21037 PROBLEMS! One cell does NOT allow multiple values. (IMPORTANT! This rule is strictly enforced in database.) Two themes: Student, Course

38 A Long List to Several Small Lists IST21038 Student Entity Course Entity Student-Course Relationship Three themes: two entities and one relationship

39 A Long List to Several Small Lists IST21039 Student Course Registration 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 Revisit previous issues: Insert: A new student not taking any class Update: IST210 location changed Delete: Kate drops 230 Use above criteria to check whether you split the tables correctly!

40 Exercise IST21040 What are the problems with this table. Split it into multiple tables. Check whether you split the table correctly.

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

42 Remember Complete Programming Skill Survey on ANGEL! 42IST210


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