Database Lifecycle

• Figure 10.1(9.1):database application lifecycle

• Approaches to managing Requirements

• centralized approach: not complex, overlap requirements Figure 10.3(9.3)
• view integration approach: complex, difference requirement Figure 10.4(9.4)
• combination of both approaches

• Approaches of Database Design

• buttom-up:based on normalization, simple case
• top-down:based on ER-model, complex case