COMPUTER FUNDAMENTALS

COMPUTER APPLICATIONS

DATABASE MANAGEMENT SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is not a property of data warehouse?
A
subject oriented
B
time variant
C
collection from heterogeneous sources
D
volatile
Explanation: 

Detailed explanation-1: -Answer-D) Volatile is not a property of the data warehouse.

Detailed explanation-2: -Nonvolatile means that, once entered into the warehouse, data should not change. This is logical because the purpose of a warehouse is to enable you to analyze what has occurred.

Detailed explanation-3: -The three main types of data warehouses are enterprise data warehouse (EDW), operational data store (ODS), and data mart.

There is 1 question to complete.