By John Mueller
Aimed squarely on the skilled developer who has labored with COM and is past the fundamentals of COM+. exhibits how COM+ can be utilized in either the overall and company programming environments. offers 5 severe and completely practical programming examples that reveal a large choice of power COM+ makes use of. Covers the 2 new beneficial properties of the COM+ setting -MSMQ(Microsoft administration Queue) and MTS (Microsoft Transaction Server).
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Extra info for COM+ Developer's Guide
Out-of-process servers are also used in a number of application scenarios where data integrity and multiple threads of execution are both important considerations. For example, graphics libraries often use the out-of-process server approach. The library starts up in a separate process to ensure that its data remains secure. TIP: Some people find it easy to confuse an out-of-process server with an application that supports OLE. The first is a component, the second is a container. Components can’t execute on their own—they need the services of a container.
DCOM connection overview block diagram DCOM Network Protocol (DCE RPC Network Protocol) Defines a protocol for creating a connection with a remote server for the purpose of using objects. In addition to implementing a component protocol, this block contains all of the elements to implement the object remote procedure call (ORPC) specification at an application level. This particular component is known by several different names in the Microsoft documentation, the most popular of which is DCOM wire protocol.
Even though you can answer your email offline, you eventually need to get online to upload the responses you create to the ISP’s server. The same thing happens with a disconnected application using MSMQ. Microsoft had to provide four features in MSMQ to make it a useful technology. The following list describes these four features and tells you why they’re important: ▼ Delivery guarantees Unless MSMQ guarantees delivery of messages, there is no way to ensure that the server or client will actually receive query responses.