Why denormalization is needed?

Related questions

1. What are OLTP and OLAP?
2. What is denormalization in database?
3. What is the advantage of denormalization?
4. What is OLTP database?
5. What is an OLTP system?
6. What is OLAP and its types?
7. What is OLTP and OLAP in SAP HANA?
8. What is the very basic difference between data warehouse and operational databases?
9. Is data warehouse OLAP or OLTP?
10. Is Snowflake OLAP or OLTP?

Tags

1. #queries
2. #problems
3. #accessible
4. #point
5. #discuss
6. #process
7. #normalized
8. #running
9. #bring
10. #usual
11. #database
12. #reports
13. #denormalization
14. #select
15. #starting
16. #making
17. #decrease
18. #generating
19. #later
20. #separate
21. #summarized
22. #tables