Model
In Royce's original waterfall model, the following phases are followed in order:
- Requirements specification
- Design
- Construction (implementation or coding)
- Integration
- Testing and debugging (validation)
- Installation
- Maintenance
Thus the waterfall model maintains that one should move to a phase only when its preceding phase is completed and perfected. Various modified waterfall models (including Royce's final model), however, can include slight or major variations on this process.
Read more about this topic: Waterfall Model
Famous quotes containing the word model:
“AIDS occupies such a large part in our awareness because of what it has been taken to represent. It seems the very model of all the catastrophes privileged populations feel await them.”
—Susan Sontag (b. 1933)
“The best way to teach a child restraint and generosity is to be a model of those qualities yourself. If your child sees that you want a particular item but refrain from buying it, either because it isn’t practical or because you can’t afford it, he will begin to understand restraint. Likewise, if you donate books or clothing to charity, take him with you to distribute the items to teach him about generosity.”
—Lawrence Balter (20th century)
“If the man who paints only the tree, or flower, or other surface he sees before him were an artist, the king of artists would be the photographer. It is for the artist to do something beyond this: in portrait painting to put on canvas something more than the face the model wears for that one day; to paint the man, in short, as well as his features.”
—James Mcneill Whistler (1834–1903)