Index Question 23 April 2010

Index Question 23 April 2010

1. Identity columns is index column?
2. Can we use multiple cluster index in sql query? if yes how?
3. what is composite index ?
4. Can an index declared on multiple column ?
5. if a table has already clustered index , can we create primary key on the table ?
6. what is page split?
7. How to rebuild the index?
8. Can we delete an index used by a primary key or unique constraint ?
9. Can we create index on table variable or temporary table?
10. can we create index on system table?

Backup plans Question from Vikram

Question on Backup plans:
1.What is full, differential and transaction log Backup in SQL Server, and how do they interact with each other?
2. How many Recovery model exist in SQL Server, and their role in the Backup strategy?
3. How does the Transaction log backup maintain log space in different recovery models?
4.In which system databases you can not Backup Transaction logs?
5. What is the differential and incremental backup in SQL Server?
6. What is Point-in-Time recovery in the SQL Server?
7. What is Copy-Only Backups feature in SQL Server?
8. Which System databases can not be backed up at all?
9. What is the Tail-end Transaction log backup, and how is it performed?
10. How is file or filegroup Backups helpful for very large databases?