Why are columnar databases faster?

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5. What is TTL in Cassandra?
6. What is Cassandra database good for?
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Tags

1. #easily
2. #oriented
3. #faster
4. #analytical
5. #format
6. #because
7. #column
8. #efficient
9. #hardware
10. #databases
11. #aggregation
12. #leverage
13. #suitable
14. #parallel
15. #lends
16. #query
17. #processing
18. #scans
19. #workloads
20. #itself
21. #columnar