CS 3630 Database Design and Implementation Dr. Qi Yang 213 Ullrich My Home Page: The Class Page:

2 CS 3630 Database Design and Implementation Prerequisites: CS 2430 and MATH1630 or MATH 2730 Oracle Programming Not a programming course Basic theory and concepts Required for CS and SE

3 Course Work Assignments 100 Quizzes100 Tests120 Project 80 Final100 Total500

4 Grading Grade Total PointsPercentageGrade Points A % 4.0 A % 3.7 B % 3.3 B % 3.0 B % 2.7 C % 2.3 C % 2.0 C % 1.7 D % 1.3 D % 1.0 F Below

Final Exam Group #10 Thursday, May 14 7:00 – 8:52 PM 5

6 Graduating Seniors Course Grade Points Percentage (%) A % A % B % B % B % C % C % C %

7 Notes Attend class Check UWP Academic misconduct The right to miss class for religious observances Disability

Any Questions? Let me know when you have any issues! 8

9 What is a computer? Input Output Storage Network CPU MEMORY

10 File Systems Files Users Programs

11 Issues in File Systems Program-Data Dependence Physical structure is defined in application code Separation and Isolation of Data Information is stored in separate files Duplication of Data and Data Inconsistency The same data may be stored in different departments Incompatible File Formats Files from C++ and COBOL may be different

12 Issues in File Systems Fixed Queries New queries requires new/modified programs Access Control and Security Who can and cannot access files, fields… Access different portions of a file Recovery …

13 Database Systems Files Users Programs DBMSDBMS DBMS: Database Management system

14 Advantages of Database Data Independence –Physical structure is unknown to application code Data Relationship –Primary key and Foreign key Limited Duplication of Data and Data Consistency Query Processing Access Control Security Recovery

15 Disadvantages of Database Complexity Cost Performance Higher Impact of Failure

16 Database: Underlying Framework of CIS Most IS are based on databases Fundamentally changed the way many organizations operate Business without database?

17 Database: One Important Development in Software Engineering Query Processing Access Control Transactions Distributed computing Networking …

18 Roles in Database Environment (People) DA (Data Administrator) DBA (Database Administrator) Database Designers Application Developers End-Users

19 Database Management Systems First generation Hierarchical Network Second generation Relational Third generation OODB GIS Fuzzy DB … Post-Relational Google’s BigTable Amazon's Dynamo

20 Database Security The mechanisms to protect the database against unauthorized access, either intentional or accidental.

21 Threats to Database Systems Any event or situation, whether intentional or accidental, that may adversely affect a database system and consequently the organization.

22 Threats to Database Systems Using another person’s means of access Inadequate policies and procedures that allow a mix of confidential and normal output Giving greater access than normal Inadequate staff training Viewing or disclosing unauthorized data Fire (electrical fault, lighting strike, arson)...

23 Database Security: Related Issues Theft and fraud Loss of confidentiality Loss of privacy Loss of integrity Loss of availability

Database Security DA DBA 24

25 Highest Academic Award in Computer Science? Turing Award Nobel Prize of Computing : Dr. E.F. Codd Relational Database Model

26 What is a computer? Input Output Storage Turing Machine Network CPU MEMORY

27 Chapter 1