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35 Biztalk Map Questions And Answers

2⟩ Explain me what are maps?

Maps are graphical representations of XSLT (Extensible Stylesheet Language Transformation) documents that allow us to perform, in a simple and visual manner, transformations between XML messages. A map file basically is the XML file that defines the correspondence between the records and fields in one schema and the records and fields in another schema. You create a map when you want to transform or translate data that you receive or send from one schema to another.


3⟩ Tell us can we have map chaining on ports?

Not on the same port, only the first that matches the received message type will execute. You can have a map execute on a Receive Port and then have another map execute on the Send Port or have multiple maps in an Orchestration


7⟩ Please explain what are grid pages and how many can we have?

The mapper grid plays a critical role in the definition of maps, containing the links and functoids that control how data in a source instance message is transformed into an instance message that conforms to the destination schema.

The grid view can have multiple layers, called grid pages, allowing you to organize complex maps into logical subdivisions of mappings. BizTalk 2010 no longer has the limitation of 20 grid pages that exist in the previous versions of the product.


12⟩ Please explain where are transformations more flexible?

Transformations are more flexible and fast when they are executed from a send or receive port. We can replace map on the ports without any development effort. But if we replace map in orchestration we have to recompile and redeploy the orchestration assembly.


15⟩ Tell me what is the Rules Engine?

Rules are used to provide highly efficient, easily changeable business rules evaluation to Business Processes. This allows rules to be changed without rebuilding and redeploying .net assemblies. The Business Rules Engine (BRE) can also be called from any .net component through the API’s.


20⟩ Tell us what kind of transformation can we accomplish using maps? [Controversial]

Using maps he can accomplish Semantic Transformations. This type of transformation usually occurs only in BizTalk maps but also can be performed inside pipelines. Here the document maintains the same syntax that is represented (XML), but changes its semantics (data content). This type of transformation is typically one-way, since that's when we added and aggregate small parts of the information, that compose the document into another differently document, we may miss important details of its reconstruction.