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In the next two lessons, we’ll explore two different scenarios. In the first, we’ll explore what we do when we want to remove a property from the object type but not from the backing dataset. We’ll then explore what happens when we want to remove a column from the backing dataset that is currently mapped to a property.
Your customer has let you know that the RuleId property is more distracting than it is useful and would like it unmapped from the object. You want to keep the column it in the backing dataset, hypothetically, because it serves as a foreign key to link to another dataset.
🔨 Task Instructions
Open your flight alert object type in OMA.
From the Overview menu, click the Edit link at the top of the PROPERTIES block near the middle of the page.
On the right side of the property mapping interface, mouse over the RuleId property and click the "trash" icon to the right.
The property disappears from the object type property list on the right but remains in the dataset column list on the left.
Click Save in the top right to update your Ontology.
In this case, the property remains present in the object storage service but it is not indexed and therefore won't appear in any Ontology-aware applications. The property can be remapped by clicking the arrow next to the column name in the dataset column list on the left.