Synchronization between RDF store and relational table

I start this question in a new thread, as it goes in a field of another problem

Is one of the option to model the attributes of the object to store the attributes in a separate relational table and a SQL allows to attach graphic query results. Now, here's a situation, if we want to join, we need to keep a few key reference in the RDF data store, so that they can join together. But it leaves a question, how do synchronize us data? Suppose that we keep a user node in RDF with the user ID property and keep all other modules in the relational table. When join us, we can reach by user ID. But if we remove this record from the user in the relational table, probably RDF will not delete this user node in the graph data store. Am I correct on this point or Oracle has a sort of way to maintain data synchronization?

Thank you.

Hi HansC,

Sorry for the late reply.

When a row is deleted from a relational table, its correspondent/associated triple (s) will NOT will be removed one or more RDF models unless there is a custom logic to handle this.

For example, we can define a trigger on the relational table to manage the synchronization of the data. Another way is to use the existing track changes

mechanism (motion Flashback, Golden Gate etc.) to preserve the synchronization data.

Thank you

Zhe Wu

Tags: Database

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