Oracle 12 c, the best way to add a foreign constraints on a property to json

Hi, I wonder what is the best way to achieve a foreign constraint in this situation:

In TABLE_A there is a column CLOB with the constraint "check is JSON.

Is it possible to create a foreign key on a column property of json that references a column (primary key) on another table?

Is it possible to create a constraint on a column property json referencing a property of another JSON column on another table?

Currently, I do as well using a trigger, or by adding a column copy the value of the property of json which I need the constraint.

Are there other ways to do this?

Thank you!.

Supported JSON is relatively new for Oracle 12 c.

Is it possible to create a foreign key on a column property of json that references a column (primary key) on another table?

Is it possible to create a constraint on a property of the column of json that refers to a property of another JSON column on another table?

As I know there is no way to create a constraint on a property JSON in a column. Part of the issue with JSON is that not all properties are required to be present in the JSON document. What would you do if these goods were missing?

Currently, I do as well using a trigger, or by adding a column copy the value of the property of json which I need the constraint.

That's how I'd do. If you have a JSON property that must be part of a constraint, use a trigger to fill another column, then put the constraint on this column.

See you soon,.
Brian

Tags: Database

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