SQL Server interview questions: – What is architecture of Notification Services?

This is the SQL Server interview questions which more of Database administrator (DBA) oriented. Have a look before going for interview. So one can start answering this question as follows.

Detail sections in SQL notification services:-

Notification Service application: – It’s a simple user application which will be used to add subscription to the subscription database.

Event providers: – All events reside in Event providers. There are two event providers which are provided by default “File System watcher” and “SQL Server event provider”. “File System watcher” detects changes in operating system files. “SQL Server event provider” watches for SQL Server or analysis service database for change. You can also plug in custom event providers. When event providers find any change in database, they send the event in “Event” table.

Generator: – Generator checks the event database, when it finds any event it tries to match with the subscription and sends it to the notification database. So generator in short is the decision maker between the subscribers and the events.

Distributor: – Distributor continuously pools the “Notification” database for any “Notification’s” to be processed. If the distributor finds any entry, it retrieves it and formats it so that it can be delivered to the end recipient. Formatting is normally done using “XML” and “XSLT” for rendering purpose.

After the formatting is done, it is then pushed to the “distribution providers”. They are nothing but medium of delivery. There are three built-in providers:-

  • SMTP provider
  • File provider
  • HTTP provider


Figure: – Detail architecture of SQL notification services.

See the following video on calling a stored procedure using LINQ: –

Click for more SQL Server interview questions


Visit for more author’s blog on SQL Server interview questions


About c# and .NET Interview questions

This blog is for developers who want to crack .NET and C# interviews. It has all tips and tricks needed to crack .NET interviews , C# interview , SQL Server interview , Java interview , WCF Interview , Silverlight interview , WPF interview , LINQ interview , Entity framework Interview. Do not forget to watch our Learn step by step video series. Learn MVC in 16 hours:- https://www.youtube.com/watch?v=Lp7nSImO5vk Learn AngularJS Step by Step:- https://www.youtube.com/watch?v=0kmdjqgO9IY Learn Design Pattern in 8 hours:- https://www.youtube.com/watch?v=YDobmucohqk Learn C# and .NET in 60 days:- https://www.youtube.com/watch?v=yh2SrzCkNQA Learn MSBI in 32 hours:- https://www.youtube.com/watch?v=mGPJx3ocFgg Learn SharePoint Step by Step in 8 hours:- https://youtu.be/C2fW76SwJNU
This entry was posted in Uncategorized and tagged , , , , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s