Teradata Interview Questions - 1

1. What is a Primary Index ?
2. What is a secondary Index ?
3. What is the need of a secondary Index ?
4. What is table skewness / skew factor?
5. what is 
1. currentperm
2. maxperm
3. peakperm
6. What is MPP ? how does teradata leverage that ?
7. What is Teradata Virtual Storage ?
8. what types of data compression does Teradata support ?
9. What is a Clique in Teradata ?
10. What is a hot standby node in Teradata ?