Difference between CDM and CDM messages

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To conclude our section on microlearnings that all have something to do with the CDM we wrap things up by learning what the difference is between CDM and CDM messages.

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Should you have any questions, please contact [[academy@emagiz.com>>mailto:academy@emagiz.com]].

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== 1. Prerequisites ==

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* Basic knowledge of the eMagiz platform

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== 2. Key concepts ==

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This microlearning centers around understanding the difference between CDM and CDM messages.

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By CDM we mean: The Canonical Data Model that plays a vital and central role while exchanging data between various systems via the messaging pattern

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* The complete CDM consists of the collection of entities that are used or going to be used in the various CDM messages

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== 3. Difference between CDM and CDM messages ==

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Simply put the difference between the CDM and the CDM messages is as follows:

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* The CDM holds all entities and attributes that are relevant within the context of your complete integration landscape.

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* The CDM message is tailor-made for a specific piece of data (i.e. Order, Invoice, Employee) and only holds the entities and attributes relevant for that piece of data.

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So that means that when you navigate to Design -> CDM you will see everything

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[[image:Main.Images.Microlearning.WebHome@crashcourse-messaging-difference-between-cdm-and-cdm-messages--cdm-overview.png]]

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Afterward when you zoom in on one of the available message types to create or view your CDM message the overview

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changes to show the structure of the message and to show which parts of the CDM are used for the CDM message.

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[[image:Main.Images.Microlearning.WebHome@crashcourse-messaging-difference-between-cdm-and-cdm-messages--cdm-overview-message-type-selected.png]]

== 4. Assignment ==

Open the CDM of your (Academy) project and subsequently open one of the CDM messages that are created within your (Academy) project and spot the differences.

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This assignment can be completed with the help of your (Academy) project you have created/used in the previous assignment.

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== 5. Key takeaways ==

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* The CDM holds all entities and attributes that are relevant within the context of your complete integration landscape.

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* The CDM message is tailor-made for a specific piece of data (i.e. Order, Invoice, Employee) and only holds the entities and attributes relevant for that piece of data.

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== 6. Suggested Additional Readings ==

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If you are interested in this topic and want more information on it please read the help text provided by eMagiz when executing these actions.

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== 7. Silent demonstration video ==

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This video demonstrates how you could have handled the assignment and gives you some context on what you have just learned.