Table 1: The difference between traditional data and big data [3].
| Characteristics | Big Data | Traditional Data |
| Volume | Terabytes or Petabytes | Gigabytes |
| Data Source | Fully distributed | Centralized |
| Generated Rate | More rapid, seconds | Hourly, daily |
| Storage | HDFS, NOSQL | RDBMS |
| Data Integration | Difficult | Easy |
| Access | Near real-time, batch processing | Interactive |
| Structure | Unstructured, Semi-structured | Structured |