BizTalk Server Interview Questions and Answers

1 :: What is the difference between a "Message Assignment" shape and an "Expression" shape?

A "Message Assignment" shape is used to create a new message and assign values to it.

A Expression shape is used to assign values to variables and also write 'if' conditions.

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2 :: What is the latest version of BizTalk Server?

The latest version of BizTalk is BizTalk Server 2009 and IDE to develop application is Visual Studio 2008 SP1.

Top New Features
BizTalk Server 2009 introduces enhancements and new featured in four main areas:

Updated Platform Support
Support for Visual Studio 2008 SP1
Support for .NET Framework 3.5 SP1
Support for Windows Server 2008
Virtualization support with Hyper-V
Support for SQL Server 2008

Developer & Team Productivity
New Application Lifecycle Management (ALM) experience - with Support for TFS - integrated source control, bug tracking, unit testing, MSBuild automation

Enhanced Developer Productivity with Visual Studio project system updates & Map Debugging
SOA and Web Services
ESB Guidance 2.0
New UDDI v3 Web Services Registry
New and enhanced LOB adapters (Oracle eBusiness Suite, SQL Server)
Enhanced host systems integration (WebSphere MQ, CICS, IMS)
Enhanced BAM support

Business to Business Integration
New Mobile RFID Platform
New RFID device management and industry standards support
Enhanced Support for EDI and AS2 Protocols and Drummond certification
Updated SWIFT Support and SWIFTReady Financial EAI Gold certification

Please refer to http://www.microsoft.com/biztalk/en/us/whats-new.aspx

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3 :: What is the difference between Distinguished field and Promoted Property?

Promoted properties can be accessed in Orchestrations, ports, pipelines, schemas.They Use server resources.

Distingished fields are light weight and can be accessed only in Orchestrations.

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4 :: What is Correlation in context of BizTalk Server?

An Orchestration can have more than one instance running simultaneously. Even though each of those multiple instances perform the same action, it does it on different data contained within a message.

Correlation is a process of associating an incoming message with the appropriate instance of an orchestration.

For Example: If your orchestration issues a purchase order, receives an invoice, and sends a payment, the developer must make certain that the invoice message is received by the orchestration instance which corresponds to the orchestration that sent the Purchase Order. Without correlation, it would be possible to send out an invoice for thousands of items even though the purchase order is for one. And each correlation is based on a set of properties known as correlation types.

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5 :: What is the difference between a Document Schema and a Property Schema?

A document schema is used to define a message. It is a definition on an Xml message with optional extensions for flat files, EDI file, etc that enable the parsers to convert the native format into Xml.

A property schema is used to define message context properties. These can be of type MessageDataPropertyBase (the property value is promoted or demoted from/to the message itself) or MessageContextPropertyBase(property value only exists within the message context and can be set by adapters, pipelines or within orchestrations).

If you wish to promote a field from a message into the message context then you need to define a document schema and property schema. In the document schema you promote the required field using the property schema to define the property type that will be used in the message context.

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