1. Chapter 14 & 15 Conceptual & Logical Database Design Methodology
Definition
Conceptual database design
Relational database - logical design
Relational database - physical design
Relational database - operation
Example

2. Definition Design methodology Conceptual database design
Structured design approach using procedures, techniques, tools and documentation aids
Conceptual database design
Constructing an information model, independent from all physical consideration for an enterprise
Logical database design
Building an organization database based on a specific data model
Physical database design
Implementing a database using specific data storage structure(s) and access methods

3. Conceptual Database Design
Entities
Relationships
Attributes (simple, no composite, no derived)
Attribute domains
Primary and candidate key attributes
Minimal set of attributes
Less change
Uniqueness in the future
Fewest characters
Easy to use by users

4. Relational Database - Logical Design
Draw ER model
Review
Always binary with1 to many relationship
No complex relationship
No redundant relationship
No recursive relationship
No relationship with attribute(s)

5. Relational Database - Logical Design
Normalize relations
Primary key
Foreign key
BCNF
Add constraints
Domain & enterprise
Inter & referential
Intra
Entity
legal

6. Relational Database - Logical Design
Review
Organization current & future needs
All user current & future requirements
Normalization(Boyce-Codd)
Relationship (one-to-one or one-to-many)
Redundancy
Constraints
User approval
Document

7. Relational Database - Logical Design
Mapping logical database to DBMS
Base relations
Integrity Rules
Referential integrity (delete & update)
No action
Cascade
Set null
Set default
No check

8. Relational Database - Physical Design
Implementing physical representation
Analysis transactions
File organization
Indexes
Disk space
Security
Policy & procedure
User view
Access rules
Tansmission

9. Relational Database - Operation
Monitoring & tuning
User requirements
Organization requirements
Performance

10. Assignment Review chapters 5-6, 11-15, 24-26 Read chapters 16-17
Work on group project
Normalized database due date: