1. Dr. Mohamed Osman Hegazi
Data & Database Administration
Course Outlines:
Introduction (background)
What is Data & Database Administration
Physical Database Design Concept
Database performance (integrity)
Recovery
Database security
Query processing and optimization
Transaction management
Data base concurrency control
Object Oriented Database
Distributed Database
Modern Database systems and concepts
Dr. Mohamed Osman Hegazi

2. Dr. Mohamed Osman Hegazi
1- introduction
Data
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Dr. Mohamed Osman Hegazi

3. Dr. Mohamed Osman Hegazi
Definitions
Data: facts, text, graphics, images, sound, video segments (raw material)
Database: An organized collection of logically related data (data with meaning)
Information: Data processed to be useful in decision making
Metadata: Data that describes data
Dr. Mohamed Osman Hegazi

4. Dr. Mohamed Osman Hegazi
Definitions: DBMS
Database Management System
Software that defines a database, stores the data, supports a query language, produces reports, and creates data entry screens.
Dr. Mohamed Osman Hegazi

5. What is a Database System (DBMS Application)?
Dr. Mohamed Osman Hegaz

6. Examples of Commercial Systems
Oracle
Informix (Unix)
DB2, SQL/DS (IBM)
Access (Microsoft)
SQL Server (Microsoft +)
Many older (Focus, IMS, ...)
mySQL
ProgresSQL
Dr. Mohamed Osman Hegaz

7. Network and Hierarchical Data Models. Object Data Models
Types of Data Models
Relational Data Model
Most commonly used model for traditional applications, and therefore basis for many commercially successful DBMS.
Legacy Data Models
Network and Hierarchical Data Models.
Object Data Models
New paradigm, in response to applications with complex data and the success of object oriented concepts in software engineering.
Dr. Mohamed Osman Hegaz

8. Hierarchical Database Example

9. Network Database Example

10. Relational Database Concepts
Keys
Referential integrity
SQL
Joining tables

11. Relation Components
Dr. Mohamed Osman Hegaz

12. Object Database Example

13. Schemas and Instances
Most data models have the concept of “schema” and“instance”.
Schema
A Schema is the meta- data, or data describing data.
Schema is specified during database design, and is not expected to change frequently.
Used to facilitate the understanding, use and management of data.
Examples:
In a library, metadata about a title would typically include a description of the content such as the author, the publication date, and the physical location.
In the context of a camera, where the data is the photographic image. What could be the meta data?
Dr. Mohamed Osman Hegaz 13

14. Query processing and transaction
UML
Mapping
Normalization
Design container , policy, Integrity
Create & Programming
Query processing and transaction
Database Administration
Dr. Mohamed Osman Hegaz

15. Assignment 1
Explain the differences between using ER and UML for conceptual database designing
Examples are needed
Assignment must be submitted on next week
Dr. Mohamed Osman Hegaz

16. What is Database Administration
A high level function (technical Function) that is responsible for
physical DB design &
dealing with technical issues such as
Database performance (integrity)
Backup & recovery
security
Monday, 17 April 2017
Dr. Mohamed Osman