Declarative v. Procedural Implementation
•Run-Time Determination of Meaning of What Is
Requested
–How to Organize
Processing
–How to Perform Each
Task
•Example:
“Alert Quiet” v. “Alert Loud”
–Pager with Pulsation v. Beep
–Phone with LED v. Stutter Tone
–PC with PopUp ICON v. Bleep Screen
•Persistence of Statement’s Validity
–Independent of New Technologies
& Implementations