Data warehousing has various characteristics including:
(A) Focuses on modelling and analysis of data relating to a specific area
(B) Data warehouse is an integration of data from various systems like CRM system, SCM system, etc
(C) The time variant for a data warehouse has a historical perspective for example, past 10-20 years
(D) It is stored permanently i.e data once stored can not be updated
(E) It is stored temporarily i.e data once stored can be updated
Choose the most appropriate answer from the options given below:
1
(B), (D), (E) only
2
(A), (B), (D) only
3
(A), (C), (D) only
4
(C), (E) only