PPT Slide

Spiral Model

Review

Commitment

partition

Determine objectives,

alternatives, constraints

Evaluate alternatives,

identify, resolve risks

Develop, verify

next-level product

[BOEHM88]

Plan next phases

Progress through steps

Cumulative Cost

Risk

analy-

sis

Pro-

totype1

Concept of

operation

Requirements plan

life cycle plan

Risk analysis

Prototype

Risk analysis

Prototype

Operational

prototype

Simulations, models, benchmarks

Software

requirements

Requirements

validation

Development

plan

Software

product

design

Design validation

& verification

Integration

and test plan

Detailed

Design

Code

Unit

Test

Integration

& Test

Acceptance

Test

Implemen-

tation

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Notes:

Spiral Model of the software process-
- Each cycle involves a progression that addresses the same sequence of steps for each portion of the product and for each of its levels of elaboration, from an overall concept of operation document down to the coding of each individual program