MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Technical MCQs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Data cleaning and data transformation are important steps in improving the quality of data and data mining results. |
| A. | TRUE |
| B. | FALSE |
| C. | Can be true or false |
| D. | Can not say |
| E. | |
| Answer» B. FALSE | |
| 2. |
Which of the following involves finding and correcting the errors in data? |
| A. | Data Extraction |
| B. | Data Cleaning |
| C. | Data Transformation |
| D. | Data Loading |
| Answer» C. Data Transformation | |
| 3. |
To integrate heterogeneous databases, we have ___________ approaches. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 4. |
OLAP contains historical data? |
| A. | Yes |
| B. | No |
| C. | Can be yes or no |
| D. | Can not say |
| Answer» B. No | |
| 5. |
________________ supports knowledge discovery by finding hidden patterns and associations, constructing analytical models, performing classification and prediction. |
| A. | Information Processing |
| B. | Analytical Processing |
| C. | Data mining |
| D. | All of the above |
| Answer» D. All of the above | |
| 6. |
A data warehouse does not require transaction processing, recovery, and concurrency controls? |
| A. | TRUE |
| B. | FALSE |
| C. | Can be true or false |
| D. | Can not say |
| Answer» B. FALSE | |
| 7. |
How many types of data warehouse there? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 8. |
Data warehouse is a? |
| A. | subject oriented |
| B. | integrated |
| C. | time-variant |
| D. | All of the above |
| Answer» E. | |
| 9. |
In Which year, Data Warehouse was first coined? |
| A. | 1987 |
| B. | 1988 |
| C. | 1989 |
| D. | 1990 |
| Answer» E. | |
| 10. |
The term Data Warehouse was first coined by? |
| A. | Roger Mougalas |
| B. | Arthur Samuel |
| C. | Bill Inmon |
| D. | Herbert Simon |
| Answer» D. Herbert Simon | |