O'Reilly logo

Visual Models for Software Requirements by Joy Beatty and Anthony Chen

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 4. Objective Chain

Suppose I am in the market to buy a new car and my main objective is to spend the least amount on a car that meets my basic needs. I care about gas mileage, long-term repair costs, frequency of repairs, cargo space, and safety. To decide which of these are most important to me, I think about how much each one contributes to the overall value of the car.

  • I can get great gas mileage with a hybrid vehicle, but that feature will cost me $10,000 and save me only $700 a year based on the miles I drive. Given the likely life of the vehicle, the feature does not have enough value to justify buying a hybrid car. Yet if I drive more miles each year or if I assume that gas prices will triple, then it could be worthwhile.

  • Research ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required