Enhance the state Diagram below to handle the following situations: (a) The course section can be cancelled when in any state, except after it has been taught. (b) A student can drop out at any time, except after the course section has been taught

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Enhance the state Diagram below to handle the following situations:
(a) The course section can be cancelled when in any state, except after it has been taught.
(b) A student can drop out at any time, except after the course section has been taught.

Enhance the Figure below to handle the following situations:
(a) The course section can be cancelled when in any state, except after it has been taught.
(b) A student can drop out at any time, except after the course section has been taught.
Planned
openRegistration
closeRegistration
Cancelled
OpenNotEnoughStudents
requestToRegister(aStudent)
/createRegistration
cancel
classSize z minimum
closeRegistration
OpenEnoughStudents
requestToRegister(aStudent)
/createRegistration
Closed
class Size z maximum
Transcribed Image Text:Enhance the Figure below to handle the following situations: (a) The course section can be cancelled when in any state, except after it has been taught. (b) A student can drop out at any time, except after the course section has been taught. Planned openRegistration closeRegistration Cancelled OpenNotEnoughStudents requestToRegister(aStudent) /createRegistration cancel classSize z minimum closeRegistration OpenEnoughStudents requestToRegister(aStudent) /createRegistration Closed class Size z maximum
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