Answer:
b) False
Explanation:
The Change Control Authority in software development is a committee consisting Subject Matter Experts(SME) and Technical Chiefs.This committee makes decision whether the changes proposed should be implemented in the software or not.So the correct answer to the question is False.They have the rights to permit changes in the software.
Answer:
2.6 seconds
Explanation:
We first start by calculating the speed up
The formula is given as:
n/1+(n-1)F
We have n = 3 which is the number of processors
F = 20% = percentage of algorithm
When we put values into the formula
3/1+(3-1)0.20
= 3/1+2*0.20
= 3/1+0.4
= 3/1.4
Speed up = 2.14
From here we calculate the expected time
T/speedups
= 5.6/2.14
= 2.6
Therefore the expected time is 2.6 seconds
Answer:
Data modeling occurs at three levels—physical, logical, and conceptual.
- A physical model is a schema or framework for how data is physically stored in a database.
- A conceptual model identifies the high-level, user view of data.
- A logical data model sits between the physical and conceptual levels and allows for the logical representation of data to be separate from its physical storage.
