Posted on 2004-08-06
Medium Priority
Last Modified: 2006-11-17
Hi All,
Pls explain me what is difference between COM, DCOM and COM+.

What is MTS and MSMQ??

thanks in advace
Question by:vinuramdas
LVL 19

Accepted Solution

drichards earned 200 total points
ID: 11742797
At a very simplistic level:

COM - Component Object Model.  A way to program by interface allowing components written in different languages to communicate with each other.  The idea is that interfaces and their binary representations are well-defined so that any COM components can talk to each other, regardless of the language used.  There are services for object creation and reflection.  Reflection allows runtime discovery of component functionality.

DCOM - Distributed COM.  Provides a wire protocol so COM objects can be used across machines.

MTS - Microsoft Transaction Server.  An environment that provides object services like transactions, security, threading support, and others.  It was intended to allow easier development of multi-tiered enterprise level apps.

COM+ - Win2k basically built MTS into the operating system, added a few new features and called it COM+.

MSMQ - Microsoft Message Queue.  A means of sending messages to allow loosely coupled components.  A component can send a message via the message queue and then exit.  The message queue is responsible for message transmission.  There are queue features to allow more sophisticated messaging.  For example, this will allow an order entry system to operate even if the machine with the back-end processing or database app is not running.  The order information is sent to the message queue and the queue will transmit all the order information once the back-end is functional again.

Assisted Solution

ErikPhilips earned 200 total points
ID: 11807956
COM+ is also a (for lack of a better term) COM Pool Server.  Typical COM calls create a COM object, then throw it away when no longer needed. COM+ caches COM Objects and allows them to be reused.

Featured Post

The new generation of project management tools

With monday.com’s project management tool, you can see what everyone on your team is working in a single glance. Its intuitive dashboards are customizable, so you can create systems that work for you.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This article introduced a TextBox that supports transparent background.   Introduction TextBox is the most widely used control component in GUI design. Most GUI controls do not support transparent background and more or less do not have the…
Introduction Hi all and welcome to my first article on Experts Exchange. A while ago, someone asked me if i could do some tutorials on object oriented programming. I decided to do them on C#. Now you may ask me, why's that? Well, one of the re…
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…
When you have multiple client accounts to manage, it often feels like there aren’t enough hours in the day. With too many applications to juggle, you can’t focus on your clients, much less your growing to-do list. But that doesn’t have to be the cas…

607 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question