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Note added for foreign keys in declarative schema #6601

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Feb 10, 2020
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Note added for foreign keys in declarative schema #6601

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be24850
note added for foreign keys
milindsingh1 Feb 10, 2020
26c7e82
Grammar update
dobooth Feb 10, 2020
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3 changes: 3 additions & 0 deletions src/guides/v2.3/extension-dev-guide/declarative-schema/db-schema.md
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Expand Up @@ -416,6 +416,9 @@ In the following example, the selected `constraint` node defines the characteris
</schema>
```

{:.bs-callout-info}
Foreign keys can only be added to tables when both tables were created using a declarative schema (`db_schema.xml`).

### Drop a foreign key

The following example removes the `FL_ALLOWED_SEVERITIES` foreign key by deleting its `constraint` node. To drop a constraint declared in another module, redeclare it with the `disabled` attribute set to `true`.
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