Database Systems: Design, Implementation, Management, Loose-leaf Version
12th Edition
ISBN: 9781305866799
Author: Coronel, Carlos; Morris, Steven
Publisher: Course Technology
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Chapter 9, Problem 6P
a)
Program Plan Intro
Maintenance:
- When the system becomes operational the requirements of the user gets changed.
- Based on the requirement change request made by the end user the requirement of the system gets changed at the maintenance phase.
- The changes that are made requires maintenance activities and that are categorized in three following ways they are:
- Corrective maintenance:
- It is the maintenance that is made in response with system errors.
- Adaptive maintenance:
- It is the maintenance that is made when there is a change in the business environment.
- Perfective maintenance:
- It is the maintenance activity that is made when the system needs to be enhanced.
- Corrective maintenance:
b)
Program Plan Intro
Maintenance:
- When the system becomes operational the requirements of the user gets changed.
- Based on the requirement change request made by the end user the requirement of the system gets changed at the maintenance phase.
- The changes that are made requires maintenance activities and that are categorized in three following ways they are:
- Corrective maintenance:
- It is the maintenance that is made in response with system errors.
- Adaptive maintenance:
- It is the maintenance that is made when there is a change in the business environment.
- Perfective maintenance:
- It is the maintenance activity that is made when the system needs to be enhanced.
- Corrective maintenance:
c)
Program Plan Intro
Maintenance:
- When the system becomes operational the requirements of the user gets changed.
- Based on the requirement change request made by the end user the requirement of the system gets changed at the maintenance phase.
- The changes that are made requires maintenance activities and that are categorized in three following ways they are:
- Corrective maintenance:
- It is the maintenance that is made in response with system errors.
- Adaptive maintenance:
- It is the maintenance that is made when there is a change in the business environment.
- Perfective maintenance:
- It is the maintenance activity that is made when the system needs to be enhanced.
- Corrective maintenance:
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d'y + 4dy +3y = a, Initial Conditions: y(0) = 5 & y'(0)=0
Where a = 10
a) Find y(t) =yh(t) +yp(t) in time domainIs the system over-damped, under-damped, or critical?
b) Find y(t) using Laplace Transforms
Given f(t)=a sin(ßt)
a = 10 & ß = 23
Find the Laplace Transform using the definition F(s) = ∫f(t)e-stdt
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Database Systems: Design, Implementation, Management, Loose-leaf Version
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