Classes in Different Phases

- startDate: Date

- startTime: Time = “09:00”

- duration: Time = “01:00”

- description: String = ""

+visualization(): Color

+collidesWith (t: Appointment): bool

...

«entity»

Appointment

{persistence=persistent}

{visualization = colorCode(type)}

Requirements Specification:

Design:

@ Ø(t.startDate=startDate ? (t.startTime ³ startTime+duration Ú

t.startTime+t.duration £ startTime))

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