SQL server service broker interview questions and answers

SQL server service broker interview questions and answers for freshers and experienced candidates. These interview questions and answers on SQL server service broker will help you strengthen your technical skills, prepare for the interviews and quickly revise the concepts. Many candidates appear for the interview for one role - many of the them give the right answers to the questions asked. The one who provides the best answer with a perfect presentation is the one who wins the interview race. The set of SQL server service broker interview questions here ensures that you offer a perfect answer to the interview questions posed to you.

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SQL Server service broker Interview questions


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Explain the components of SQL server service broker.
What do we need Queues?
What is “Asynchronous” communication?
What is SQL server service broker?
What are the essential components of SQL Server Service broker?
What is the main purpose of having Conversation Group?
How to implement Service Broker?
How do we encrypt data between Dialogs?

SQL Server service broker - August 29, 2008 at 18:00 PM by Amit Satpute

Explain the components of SQL server service broker.

Below are the Service Broker infrastructure components:

Message Type
Remote Binding Service

SQL Server service broker - March 10, 2009 at 19:00 PM by Rajmeet Ghai

What do we need Queues?

A queue holds the incoming message before they are processed for a service.
One queue per service is created.

A queue can be created using:


What is “Asynchronous” communication?

In Asynchronous communication, messages can be queued until the service which was down is up and running. Asynchronous communication is loosely coupled. This means that there can be another component waiting to acknowledge the message. In this communication, the sender need not wait for a response but can continue to work.

What is SQL Server Service broker?

SQL service broker provides a mechanism to queue provide reliable messaging for SQL server. Using SQL server, the service broker assists in passing messages between applications. It also rejects messages with invalid format and performs retries. Service broker helps to make scalable and secure database applications.

What are the essential components of SQL Server Service broker?

The components in SQL server Service broker are represented by Server objects used in the messaging. Queue is an object that holds the messages for processing. Dialogues exchanged between two endpoints are grouped by conversation groups. There are some components used at design time called as service definition components used to specify the basic design of the application. Routing and security components are used to define the communications.

What is the main purpose of having Conversation Group?

Any application using service broker communicates by exchanging conversations that is nothing but asynchronous and reliable messages. Conversation group is a group of conversations used to accomplish the same task. These groups help in concurrency. They can also be used to manage the states.

How to implement Service Broker?

Using Transact SQL statements service broker can be used. An application can be implemented as a program running outside of SQL Server or as a stored procedure. Service broker uses a number of components to perform a task. A program that starts a conversation creates and sends a message to a service that may or may not respond. Any application that intends to use Service broker does not need any special object model or library. Transact-SQL commands to SQL Server can be sent for processing.

How do we encrypt data between Dialogs?

Using Dialog Security the dialogues can be encrypted at the initiator and then decrypted at the target. Dialogue security can be implemented by implemented as full dialogue security or anonymous dialog security. In full dialogue, both the database that initiates the service and database that calls the service to be implemented needs to have two users. Each service in the conversation is bound by a remotes service. A certificate is associated with each user, so that messages can be encrypted using the recipient's public key and decrypted using the corresponding private key. If anonymous dialog security is used, target service need not explicitly permit access to a remote user. A guest account can be used to generate a session key and encrypt the message.

SQL Server service broker - May 18, 2009 at 10:00 AM by Rajmeet Ghai

What is Service Broker?

Catalog views serve as a repository to store static metadara like server side and database specific objects. This includes logins, tables, stored procedures etc. It is always better to use catalogue views to view system data rather than using system tables.

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  1. Describe SQL Server service broker.
  2. Explain Asynchronous communication.
  3. Explain how we implement service broker.
  4. What are the components of Service broker?

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