HOTSPOT
You need to develop a Transact-SQL statement that meets the following requirements:
The statement must return a custom error when there are problems updating a table.
The error number must be value50555.
Theerror severity level must be14.
A Microsoft SQL Server alert must be triggered when the error condition occurs.
Which Transact-SQL segment should you use for each requirement? To answer, select the appropriate
Transact-SQL segments in the answer area.
Hot Area:
Answer: 
Explanation:
Box 1: TRY…CATCH
The TRY…CATCH Transact-SQL construct implements error handling for Transact-SQL that is similar to the
exception handling in the Microsoft Visual C# and Microsoft Visual C++ languages. A group of Transact-SQL
statements can be enclosed in a TRY block. If an error occurs in the TRY block, control is passed to another
group of statements that is enclosed in a CATCH block.
Box 2: RAISERROR(50555, 14, 1 ‘The update failed.”) WITH LOG
We must use RAISERROR to be able to specify the required severity level of 14, and we should also use the
LOG option, which Logs the error in the error log and the application log for the instance of the Microsoft SQL
Server Database Engine, as this enable a MS MS SQL SERVER alert to be triggered.
Note: RAISERROR generates an error message and initiates error processing for the session. RAISERROR
can either reference a user-defined message stored in the sys.messages catalog view or build a message
dynamically. The message is returned as a server error message to the calling application or to an associated
CATCH block of a TRY…CATCH construct.
Incorrect Answers:
Not THROW: THROW does not have a severity parameter.https://msdn.microsoft.com/en-us/library/ms175976.aspx
https://msdn.microsoft.com/en-us/library/ms178592.aspx