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12	12	This microlearning centers around understanding the concept data modeling in design.
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14		-== 3. Please complete the following steps ==
	14	+== 3. CDM, CDM & system message, message mapping ==
	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
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17		-=== 3.1 Creating entities and attributes in your CDM ===
	24	+One person has access to many platform courses. It should look like the following:
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19		-Please add the following entities and attributes to your CDM:
	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:
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21		-* Person, with attributes ID, Name, and Email.
22		-* PlatformCourse, with attributes ID and Name.
	31	+[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--adding-message-definition-CDM-message.png]]
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24		-One person has access to many platform courses. It should look like the following:
	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
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	40	+One user has access to many courses. It should look like the following:
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	42	+[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--adding-attributes-entities-system-message.png]]
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	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	+== Complete message mapping ==
	49	+
	50	+Now that you have completed these steps, go to Message mapping and complete the mapping.
	51	+
	52	+[[image:Main.Images.Usecase.WebHome@data-modeling-in-design-exercises--complete-message-mapping.png]]
	53	+
29	29	== 4. Assignment ==
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31	31	Navigate to Design and open the message definition option of at least one integration within your project.