Chapter 2 : Issues related to information systems and database

Question 1

Issue with data source

Answer 1

Must ask permission to copy source

Question 2

Issue with accuracy of data

Answer 2

Need to check data validation through: range check, list check, type check, check digit.

Question 3

What is data integrity?

Answer 3

Reliability of data

Question 4

What is data warehousing and data mining

Answer 4

• Data warehouse is database that collect information from different data source
• Data mining is a process that looks for relationships and patterns in the data stored in a database