Developing an Entity Model - Revision history

Jen at 18:15, 22 October 2025

2025-10-22T18:15:14Z

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	That's it! You've exercised most of the basic features in PHENOM's Entity Modeler. You have learned how to create basic entities, add simple attributes (observables), add composed attributes, create associations, add associated entities, use basic diagramming capabilities, and perform basic refactoring.		That's it! You've exercised most of the basic features in PHENOM's Entity Modeler. You have learned how to create basic entities, add simple attributes (observables), add composed attributes, create associations, add associated entities, use basic diagramming capabilities, and perform basic refactoring.

			[[Category:UserGuide\|0042_Developing_an_Entity_Model]]

Chris: /* Extra Navigation in PHENOM */

2022-08-05T21:15:23Z

Extra Navigation in PHENOM

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	==Extra Navigation in PHENOM==		==Extra Navigation in PHENOM==

	PHENOM provides several tools for navigation the types of relationships we just created. Let's take a look at those by going back to the ~~Climbing_Wall~~ entity and scroll down to the box labeled "Composed In". You should see that "Wall" is listed in this box. This shows you all of the other entities that compose the current entity.		PHENOM provides several tools for navigation the types of relationships we just created. Let's take a look at those by going back to the Climbing_Route entity and scroll down to the box labeled "Composed In". You should see that "Wall" is listed in this box. This shows you all of the other entities that compose the current entity.

			[[File:Phenomportal tutorial dm composed in.png\|thumb\|none]]

	Below that, there is a box called "Associated In." In there, you can see the association(s) that point to this entity.		Below that, there is a box called "Associated In." In there, you can see the association(s) that point to this entity.

	~~Along the top of the details panel (and below the toolbar with the CREATE button), you should see a DIAGRAM tab. Click on that~~.		[[File:Phenomportal tutorial dm associated in.png\|thumb\|none]]

			Along the top of the details panel, you should see a DIAGRAM tab. Click on that.

			[[File:Phenomportal tutorial tabs.png\|thumb\|none]]

	Drag your rock climbing entities and association into the diagram from the NavTree. Te resulting diagram should look a little something like the one below. My project has a couple of subtle differences.		Drag your rock climbing entities and association into the diagram from the NavTree. Te resulting diagram should look a little something like the one below. My project has a couple of subtle differences.

			[[File:Phenomportal dm sample diagram.png\|thumb\|none]]
	[~~PHENOM Knowledgebase > Exercise~~: ~~Developing an Entity Model > image2020-2-28_18-4-39~~.png]

	==Wrapping Up==		==Wrapping Up==

	That's it! You've exercised most of the basic features in PHENOM's Entity Modeler. You have learned how to create basic entities, add simple attributes (observables), add composed attributes, create associations, add associated entities, use basic diagramming capabilities, and perform basic refactoring.		That's it! You've exercised most of the basic features in PHENOM's Entity Modeler. You have learned how to create basic entities, add simple attributes (observables), add composed attributes, create associations, add associated entities, use basic diagramming capabilities, and perform basic refactoring.

Chris: /* Create the Climber */

2022-08-05T20:58:48Z

Create the Climber

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	Although climbing walls are great, they are far better if we have some climbers that use them! So, let's create a rock climber entity.		Although climbing walls are great, they are far better if we have some climbers that use them! So, let's create a rock climber entity.

	Use PHENOM to create the following Entity. (HINT: if you let PHENOM automatically create the ~~unique~~ identifier attribute, you can rename it in the details page.)		Use PHENOM to create the following Entity. (HINT: if you let PHENOM automatically create the [[identifier]] attribute, you can rename it in the details page.)

	[[File:Phenomportal tutorial dm sample entity 2.png\|thumb\|none]]		[[File:Phenomportal tutorial dm sample entity 2.png\|thumb\|none]]

Chris: /* Composing an Entity */

2022-08-05T20:57:01Z

Composing an Entity

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	Now, navigate back to wall. Click "+Create" to add a new attribute called "route" and, in the drop-down, select the new entity, "Climbing_Route."		Now, navigate back to wall. Click "+Create" to add a new attribute called "route" and, in the drop-down, select the new entity, "Climbing_Route."

			[[File:Phenomportal tutorial dm add complex attribute.png\|thumb\|none]]

	Click SAVE.		Click SAVE.

Chris: /* Creating Your First Entity */

2022-08-05T20:13:21Z

Creating Your First Entity

← Older revision		Revision as of 16:13, 5 August 2022
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	For the entity name, type "Wall". You may leave description blank.		For the entity name, type "Wall". You may leave description blank.

	Now, there is checkbox there that says, "Add UniqueIdentifier attribute". Make sure that is checked. This will save us a little work in a couple of minutes.		Now, there is checkbox there that says, "Add [[UniqueIdentifier]] attribute". Make sure that is checked. This will save us a little work in a couple of minutes.

	Click SAVE.		Click SAVE.

Chris: /* How Many Times Did I Climb That? */

2022-08-05T18:55:41Z

How Many Times Did I Climb That?

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	Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."		Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."

	In the box immediately below the Attribute box, there is another box called [[Participants]] ([[Associated Entities~~\|Participants~~]]).		In the box immediately below the Attribute box, there is another box called [[Participants]] ([[Participants\|Associated Entities]]).

	Using the "+Create" button, go ahead and create two [[participants]] as shown below:		Using the "+Create" button, go ahead and create two [[participants]] as shown below:

Chris: /* How Many Times Did I Climb That? */

2022-08-05T18:55:20Z

How Many Times Did I Climb That?

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	The answer is, none of them. If we put a counter in any of those, it would most like be pretty ambiguous. A counter on the wall would possibly be the number of climbs on the wall. And on the climber, the number of climbs the climber has.		The answer is, none of them. If we put a counter in any of those, it would most like be pretty ambiguous. A counter on the wall would possibly be the number of climbs on the wall. And on the climber, the number of climbs the climber has.

	For this, we need data to relate the Climber and the Climb_Route. Since this is relational data, we use an ~~<nowiki>~~[[association]]~~</nowiki>~~. Fortunately, you pretty much know how to create one already.		For this, we need data to relate the Climber and the Climb_Route. Since this is relational data, we use an [[association]]. Fortunately, you pretty much know how to create one already.

	Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."		Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."

Chris: /* How Many Times Did I Climb That? */

2022-08-05T18:55:04Z

How Many Times Did I Climb That?

← Older revision		Revision as of 14:55, 5 August 2022
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	The answer is, none of them. If we put a counter in any of those, it would most like be pretty ambiguous. A counter on the wall would possibly be the number of climbs on the wall. And on the climber, the number of climbs the climber has.		The answer is, none of them. If we put a counter in any of those, it would most like be pretty ambiguous. A counter on the wall would possibly be the number of climbs on the wall. And on the climber, the number of climbs the climber has.

	For this, we need data to relate the Climber and the Climb_Route. Since this is relational data, we use an association. Fortunately, you pretty much know how to create one already.		For this, we need data to relate the Climber and the Climb_Route. Since this is relational data, we use an <nowiki>[[association]]</nowiki>. Fortunately, you pretty much know how to create one already.

	Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."		Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."

Chris: /* How Many Times Did I Climb That? */

2022-08-05T18:54:23Z

How Many Times Did I Climb That?

← Older revision		Revision as of 14:54, 5 August 2022
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	Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."		Start by CREATING a new ENTITY called "Climbs_on_Route" and add an attribute called "number_of_climbs" with a type of "Count."

	In the box immediately below the Attribute box, there is another box called "Associated Entities."		In the box immediately below the Attribute box, there is another box called [[Participants]] ([[Associated Entities\|Participants]]).

	Using the "+Create" button, go ahead and create two ~~associated entities~~ as shown below:		Using the "+Create" button, go ahead and create two [[participants]] as shown below:

	This association is relating the Climber and the Climbing_Route to one another and describes something (the number of climbs) about that relationship.		[[File:Phenomportal tutorial dm sample participants.png\|thumb\|none]]

			This [[association]] is relating the Climber and the Climbing_Route to one another and describes something (the number of climbs) about that relationship.

	Click SAVE.		Click SAVE.

	NOTE: At a very minimum, you must add two ~~associated entities~~. It is possible to select the same entity twice (you could point to Climber two times), but it is important that you have a clear reason for doing so. In this case, maybe you are modeling a climbing buddy.		NOTE: At a very minimum, you must add two [[participants]]. It is possible to select the same entity twice (you could point to Climber two times), but it is important that you have a clear reason for doing so. In this case, maybe you are modeling a climbing buddy.

	==Extra Navigation in PHENOM==		==Extra Navigation in PHENOM==

Chris: /* Create the Climber */

2022-08-05T18:48:05Z

Create the Climber

← Older revision		Revision as of 14:48, 5 August 2022
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	Use PHENOM to create the following Entity. (HINT: if you let PHENOM automatically create the unique identifier attribute, you can rename it in the details page.)		Use PHENOM to create the following Entity. (HINT: if you let PHENOM automatically create the unique identifier attribute, you can rename it in the details page.)

	[~~PHENOM Knowledgebase > Exercise~~: ~~Developing an Entity Model > image2020-~~2~~-28_17-51-15~~.png]		[[File:Phenomportal tutorial dm sample entity 2.png\|thumb\|none]]

	==How Many Times Did I Climb That?==		==How Many Times Did I Climb That?==