1. Chapters 17 & 18 Physical Database Design Methodology

2. Agenda Physical database design Mapping Logical Design to DBMS Balancing the flexibility and performance Monitoring and Tuning DBMS

3. Physical Database Design Implementing a database using specific data storage structures and access methods

4. Mapping Logical Design to DBMS -I Create base relations –Name –Attributes –Primary key –Foreign key –Alternative key –Indexes Implement integrity rules –Domain –Enterprise –Referential (no action, cascade, set null, set default, and no check for deleting and updating) –Entity

5. Mapping Logical Design to DBMS -II Design representation of derived data Analysis transactions for file organizations and indexes Estimate disk space requirements Design user views Design security –System –Data

6. Balancing Flexibility and Performance Denormalization –Low update rate –High query rate –Cross-referencing transactions and relations table Steps –Derived data –Redundancy

7. Monitoring and Tuning DBMS Correct inappropriate design Implement new minor requirement Produce better Response time and throughput Increase user’s satisfaction

8. Points To Remember Physical database design Mapping Logical Design to DBMS Balancing the flexibility and performance Monitoring and Tuning DBMS

9. Assignment Review chapters 5-6 and11-18 Read chapters 25-27 Project (enhanced e-r & normalization) –Due date: