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Last modified by Carlijn Kokkeler on 2022/10/19 13:32
From version 12.1
edited by Carlijn Kokkeler
on 2022/10/19 11:41
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To version 8.1
edited by Carlijn Kokkeler
on 2022/09/30 10:03
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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 +
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
16 16  
17 -* Creating a CDM
18 - Please import the file Order.xsd in your CDM.
19 -* Creating a CDM message
20 - 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.
21 -* Creating a system message
22 - 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.
23 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 +== 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 +
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
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 +
24 24  == 3.4 Complete message mapping ==
25 25  
26 26  Now that you have completed these steps, go to Message mapping and complete the mapping.
27 27  
28 -The solutions to these exercises can be found [[here>>doc:Main.eMagiz Academy.Use Cases.Data modeling in Design.Exercises.Solutions.WebHome||target="blank"]].
52 +[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--complete-message-mapping.png]]
53 +
29 29  
30 30  == 4. Key takeaways ==
31 31