Business analysis is difficult from operational databases. Which of the following is a reason, why? a. Every department has its own method for recording data. b. Data standards do not apply across departments. c. All of these. d. The data, if available, were often incorrect or incomplete.

c. All of these

Explanation:

Business analysis is difficult from operational databases for quite a number of reasons which include but are not limited to:

i. Every department having its own method for recording data - there is a misalignment of data definitions across differnent departments which means that users might not be able to compare data effectively.

ii. Data standards not applying across departments - Different departments usually use different formats to record data again making comparison difficult.

iii. The data, if available, often being incorrect or incomplete - missing data across departments due to lack of set standards can again make comparisons difficult.

Therefore all of the options are correct.

the answer is account d