How a request is routed (request flow) in an n-tier
architecture. digramatically explain a basic n-tier
architecture.
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• Message Oriented 3 tier Architecture
. Technologies adapted
– 1. ASP.NET web application
• Operators enter the orders via web application
– 2. ADO.NET DLL
• Connect database
– Web services
• Database APIs of order, facility and customer
DB are exposed via web services
– MSMQ
• transfer order data from web server to
application(biztalk) server
– 3.4.5.6.7.BizTalk server
• Receive order from MSMQ
• Workflow control SQL server
– SQL server
• Store order, facility and customer information
– COM+
• BizTalk orchestration calls COM+ for database
manipulation. COM+ calls web service of DB
APIs
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