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Last modified by Carlijn Kokkeler on 2022/10/19 13:32
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edited by Carlijn Kokkeler
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To version 9.1
edited by Carlijn Kokkeler
on 2022/10/19 11:39
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13 13  
14 14  == 3. CDM, CDM & system message, message mapping ==
15 15  By following the steps below, you should gain a better understanding of the differences between CDM, CDM messages, and system messages.
16 -
16 +
17 17  == 3.1 Creating a CDM ==
18 -Please add the following entities and attributes to your CDM:
19 -
20 -* Person, with attributes ID, Name, and Email
21 -* PlatformCourse, with attributes ID and Name
18 +Please import the file Order.xsd in your CDM.
22 22  
23 -
24 -One person has access to many platform courses. It should look like the following:
25 -
26 -[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--adding-attributes-entities-CDM.png]]
27 -
28 28  == 3.2 Creating a CDM message ==
29 -Now, go to your CDM message and add the Person and PlatformCourse to your message definition, including all attributes. It should look like the following:
30 -
31 -[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--adding-message-definition-CDM-message.png]]
32 -
21 +Now, go to your CDM message and select Order as root entity. Add all other entities and attributes from Order.xsd, which were imported into the CDM, to your CDM message definition.
22 +
33 33  == 3.3 Creating a system message ==
34 -In System message, create the following entities and attributes:
35 -
36 -* User, with attributes ID and Name
37 -* Course, with attributes ID and Name
24 +In one of your System messages, import the file TransportOrder.xsd. Select CreateOrder as root entity and add all other entities and attributes to your system definition.
38 38  
39 -
40 -One user has access to many courses. It should look like the following:
41 -
42 -[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--adding-attributes-entities-system-message.png]]
43 -
44 -Now, remove the attribute Name in Course by using the Toggle canvas edit mode. It should result in the following:
45 -
46 -[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--remove-attribute-system-message.png]]
47 -
48 48  == 3.4 Complete message mapping ==
49 49  
50 50  Now that you have completed these steps, go to Message mapping and complete the mapping.
51 51  
52 -[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--complete-message-mapping.png]]
53 -
54 -== 4. Assignment ==
30 +The solutions to these exercises can be found [[here>>doc:Main.eMagiz Academy.Use Cases.Data modeling in Design.Exercises.Solutions.WebHome||target="blank"]].
55 55  
56 -Navigate to Design and open the message definition option of at least one integration within your project.
57 -This assignment can be completed within the (Academy) project that you have created/used in the previous assignment.
32 +== 4. Key takeaways ==
58 58  
59 -== 5. Key takeaways ==
34 +* The CDM holds all entities and attributes that are relevant within the context of your complete integration landscape.
35 +* The CDM message is tailor-made for a specific piece of data and only holds the entities and attributes relevant for that piece of data.
36 +* A system message is specific to a system.
60 60  
61 -* A message definition is a visual representation of how the elements are related to each other, whether they are mandatory and the data types they have that can be used in the message mapping
62 -* Some message definitions are specific to a system. Others are generic across systems
63 63  
39 +== 5. Suggested Additional Readings ==
64 64  
41 +If you are interested in this topic and want more information on it please read the help text provided by eMagiz.
65 65  
66 -== 6. Suggested Additional Readings ==
67 67  
68 -If you are interested in this topic and want more information on it please read the help text provided by eMagiz. Furthermore check out these links if you want a more in-depth knowledge of the eMagiz data models:
69 69  
70 -* [API Gateway model](crashcourse-api-gateway-api-data-model.md)
71 -* [Understanding the eMagiz CDM](crashcourse-messaging-what-is-cdm.md)
72 -* [Event Streaming data model](intermediate-configuring-event-streaming-data-model.md)
73 -
74 -== 7. Silent demonstration video ==
75 -
76 -This video demonstrates a working solution and how you can validate whether you have successfully completed the assignment.
77 -
78 -{{video attachment="crashcourse-platform-design-what-is-a-message-definition.mp4" reference="Main.Videos.Microlearning.WebHome"/}}
79 -
80 80  )))((({{toc/}}))){{/container}}{{/container}}