The advantages of a data warehouse over a data mart include all of the following except one. select the one that is not an advantage.
data mart allows faster access of data.
data mart is easy to use as it is specifically designed for the needs of its users. thus a data mart can accelerate business processes.
many a times enterprises create too many disparate and unrelated data marts without much benefit. it can become a big hurdle to maintain.

Many a times enterprises create too many disparate and unrelated data marts without much benefit. It can become a big hurdle to maintain.

Explanation:

A data mart is an Information technology structure or pattern specific to data warehouse environments.

Data mart is an element of data warehouse. It is used to retrieve data related to client-facing activities and is usually designed specifically for the needs of its users.

Based on the options given, the disadvantage of data mart is that many a times enterprises create too many disparate and unrelated data marts without much benefit. It can become a big hurdle to maintain.

1. P(T=5) = F(5) −F(4) = 0.75−0.5 =0.25

2. P(T>3) = 1−F(3)=1−0.5=0.5

3. P(1.4<T<6) = F(6)−F(1.4)=0.75−0.5=0.25