Fundamentals of Databases

Transcription

1 Fundamentals of Databases College of Computers and Information Technology Taif University Saudi Arabia Fundamentals of Databases Dr. Salha M. Alzahrani 1 Fundamentals of Databases Dr. Salha M. Alzahrani 2 1

2 Fundamentals of Databases Website & Twitter Course hashtag #fundamental_database Fundamentals of Databases Dr. Salha M. Alzahrani 3 Fundamentals of Databases Website & Twitter Fundamentals of Databases Dr. Salha M. Alzahrani 4 2

3 Fundamentals of Databases Academic Vocabulary Brush up your English! Examples of Academic Vocabulary: 1. abbreviate 2. abstract 3. according 4. acronym 5. address 6. affect 7. alter 8. always 9. analogy 10. analysis 11. analyze 12. annotate 13. anticipate 14. application 15. apply 16. approach 17. appropriate 18. approximate etc. A list of academic vocabulary can be found on the Web (or you may download from the course website). Fundamentals of Databases Dr. Salha M. Alzahrani 5 Fundamentals of Databases Glossary & Notation Become familiar with the course terminologies! Example from the book glossary: A list of glossary and notation can be downloaded from the course website Fundamentals of Databases Dr. Salha M. Alzahrani 6 3

4 Fundamentals of Databases Student Portfolio Each student should prepare her own course portfolio! Portfolios should include the following parts: 1) Course Syllabus 2) Lecture notes (slides) 3) Assignments 4) Quizzes 5) Mid-term exam and answer sheet. 6) Research articles and other reading articles/materials. 7) Lab notes, exercises, and codes. Portfolios may be checked regularly by the instructor. Fundamentals of Databases Dr. Salha M. Alzahrani 7 Fundamentals of Databases Topics so far List of Topics No. of Weeks Databases and Database Users 1 Ch1 Database System Concepts and Architecture 1 Ch2 Chapter Covered? Data Modeling Using the Entity- Relationship(ER) Model The Relational Data Model and Relational Database Constraints The Relational Algebra and Relational Calculus Relational Database Design by ER-to- Relational Mapping SQL-99: Schema Definition, Constraints, Queries, and Views Functional Dependencies and Normalization for Relational Databases 2 Ch7 2 Ch3 2 Ch6 2 Ch9 3 Ch4- Ch5 2 Ch15 4

5 Fundamentals of Databases Word Cloud Fundamentals of Databases Dr. Salha M. Alzahrani 9 Fundamentals of Databases Topics so far Recap of Previous Lectures Content of This Lecture Summary & Checklist Recap of Chapter 1 Introduction An Example Characteristics of the Database Approach Actors on the Scene Workers behind the Scene Advantages of Using the DBMS Approach A Brief History of Database Applications When Not to Use a DBMS Fundamentals of Databases Dr. Salha M. Alzahrani 10 5

6 Fundamentals of Databases Topics so far Recap of Previous Lectures Content of This Lecture Summary & Checklist Recap of Chapter 2 Data Models, Schemas, and Instances Three-Schema Architecture and Data Independence Database Languages and Interfaces The Database System Environment Centralized and Client/Server Architectures for DBMSs Classification of Database Management Systems Fundamentals of Databases Dr. Salha M. Alzahrani 11 Fundamentals of Databases Topics so far Recap of Previous Lectures Content of This Lecture Summary & Checklist Recap of Chapter 7 Using High-Level Conceptual Data Models for Database Design A Sample Database Application Entity Types, Entity Sets, Attributes, and Keys Relationship Types, Relationship Sets, Roles, and Structural Constraints Weak Entity Types Refining the ER Design for the COMPANY Database ER Diagrams, Naming Conventions, and Design Issues Fundamentals of Databases Dr. Salha M. Alzahrani 12 6

7 Fundamentals of Databases Topics so far Recap of Previous Lectures Content of This Lecture Summary & Checklist Recap of Chapter 3 The Relational Data Model and Relational Database Constraints Relational Model Constraints and Relational Database Schemas Update Operations, Transactions, and Dealing with Constraint Violations Fundamentals of Databases Dr. Salha M. Alzahrani 13 Fundamentals of Databases DB and DBMS Database Collection of related data (recorded facts) DBMS Generalized software package for implementing and maintaining a computerized database Several categories of database users Database applications have evolved Current trends: IR, Web Fundamentals of Databases Dr. Salha M. Alzahrani 14 7

8 Fundamentals of Databases Example of Database : Student and Course information Fundamentals of Databases Dr. Salha M. Alzahrani 15 Fundamentals of Databases Schema Diagram Fundamentals of Databases Dr. Salha M. Alzahrani 16 8

9 Fundamentals of Databases Network Model for Schema Diagram Fundamentals of Databases Dr. Salha M. Alzahrani 17 Fundamentals of Databases Example of Database : COMPANY Fundamentals of Databases Dr. Salha M. Alzahrani 18 9

10 Fundamentals of Databases Example of Database : COMPANY Fundamentals of Databases Dr. Salha M. Alzahrani 19 Fundamentals of Databases Relational Schema vs. ER Model The Relational Algebra and Relational Calculus Dr. Salha M. Alzahrani 20 10

11 Fundamentals of Databases Relational Schema vs. ER Model Relational schema represents data as: Collection of relations Tuple Attribute Referential integrity constraints ER model describes data as: Entities Relationships Attributes Fundamentals of Databases Dr. Salha M. Alzahrani 21 Fundamentals of Databases Relational Schema vs. ER Model vs. UML Class Diagram Fundamentals of Databases Dr. Salha M. Alzahrani 22 11

12 Fundamentals of Databases Relational Schema vs. ER Model vs. UML Class Diagram Relational schema represents data as: Relations Tuples Attributes Referential integrity constraints ER model describes data as: Entities Relationships Attributes UML Class diagram describes data as: Classes Objects Associations Attributes Methods/Functions Fundamentals of Databases Dr. Salha M. Alzahrani 23 Fundamentals of Databases Relational Model Concepts Relation schema R Denoted by R(A 1,A 2,...,A n ) Made up of a relation name Rand a list of attributes, A 1,A 2,..., A n Fundamentals of Databases Dr. Salha M. Alzahrani 24 12

13 Fundamentals of Databases Relational Schema of COMPANY Fundamentals of Databases Dr. Salha M. Alzahrani 25 Fundamentals of Databases ER Schema of COMPANY Fundamentals of Databases Dr. Salha M. Alzahrani 26 13

14 Fundamentals of Databases ER Diagrams, Naming Conventions, and Design Issues Fundamentals of Databases Dr. Salha M. Alzahrani 27 Fundamentals of Databases UML Schema of COMPANY Fundamentals of Databases Dr. Salha M. Alzahrani 28 14

15 Fundamentals of Databases End of Lecture Recap of Previous Lecture Content of This Lecture Summary & Checklist Summary & Checklist DB and DBMS Example of Database : Student and Course information Schema Diagram Network Model for Schema Diagram Example of Database : COMPANY Relational Schema vs. ER Model Relational Schema vs. ER Model vs. UML Class Diagram Relational Model Concepts Relational Schema of COMPANY ER Schema of COMPANY ER Diagrams, Naming Conventions, and Design Issues UML Schema of COMPANY Website: s.zahrani@tu.edu.sa admin@c2learn.com Fundamentals of Databases Dr. Salha M. Alzahrani 30 15