DATABSE SECURITY

1. What are the security architecture of sql server ? Principal, securable and permission .

2. What are authentication modes of sql server ? Windows mode, and mixed modes ?

3. What is principal and what are principals ?

4. What is securable and what are securable ?

5. What is permissions and what are permissions ?

6. What is roles in sql server ? Fixed server and fixed database role ?

7. What are fixed database roles in sql server ?

8. What are principals at various levels ?

9. What are securable at various levels ?

10. What are major permissions ?

11. What are fixed servers – bulk_admin, sys_admin, disk_admin, server_admin,security_admin

12. What are fixed db Roles – Backup_operator,Data_reader,Data_Writer,Deny_datareader,deny_datawriter,

13. What is difference between GRANT, Deny and Revoke ?

14. What are orphaned users ?

15. How to handle or manage orphaned users ?

16. Explain the process to make logins, create users and give permission to objects ?

17. What is difference between login and users ?

18. What is SSO ?

19. What is Ownership Chain ?

20. Where does Login Stores in Database ?

21. How to give roles or access a login to take backup only .

22. What is the Security Architecture of your organization ?

23. How to transfer logins from one server to another server ?

24. What is difference between Authentication and Authorization ?

25. What is SSCM, SAC and SNAC ?

26. What is default PORT of SQL Server and How to configure ?

27. Can we configure sql port other than 1433. how and why...?

28. What is TDE and How to implement it ?

29. What is Encryption and what are the data encryption method in SQL 2008 ?

30. What is Surface Area Configuration in sql server 2005 ? What we can do with this ?

31. What are Endpoints in SQL Server ? How to configure ?

32. What are the major security Artifacts we should to follow to create a secured Database Environment ?

33. Can we give permission for insert/update without giving select permission to users.

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How to encrypt and decrypt Table data in postgres

For encrypting and decrypting , we must use the bytea data type on the column which we implement. Bcoz bytea will use the pgcrypto method by default. However, you will need to create the pgcrypto extension to enable these functions as they are not pre-defined in PostgreSQL/PPAS. Example CREATE EXTENSION pgcrypto; CREATE TABLE userinfo (username varchar(20), password bytea); >> Inserting the data in an encrypted format INSERT INTO userinfo VALUES(' suman ',encrypt('111222','password','aes')); select * from userinfo ; >> Retrieving the data as decrypted format SELECT decrypt(password,decode('password','escape'::text),'aes'::text) FROM userinfo; Thanks for reading Plz dont forget to like Facebook Page.. https://www.facebook.com/pages/Sql-DBAcoin/523110684456757

How to recover msdb database from suspect mode

It was Monday 9 th Jun 47 degr. temperature of Delhi-NCR. Temperature was like boiling me and database. When I reached my office( @ 8.45 am) got an alert from one of Server. “MSDB is in suspected mode” At the same time comes in my mind, this issue will boil me today.. I just tried to cool my self through cold drink then connected server from my local system using windows authentication mode..

SQL71562: external references are not supported when creating a package from this platform

Last week I got this error from one of developer who was trying to deploy his project from Testing server to SQL Azure QA server. He was using “Deploy Database to SQL Azure” option from SSMS Tool-Task option. After connecting to SQL Azure portal when operation started to deployment below errors occurs. Validation of the schema model for data package failed. Error SQL71562: Error validating element xx.xxx.xx:function .dbo.xxx has an unresolved refrence to object xx.dbo.xxxx external refrences are not supported when creating a package from this platform . Reason: The reason of the this error was; some functions of project was dependent on master database and only single database was being deploy to SQL Azure. DACFx must block Export when object definitions (views, procedures, etc.) contain external references, as Azure SQL Database does not allow cross-database external references So, this error was coming. Solution : I suggested him to create those function to locally

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