[Data-modeling] underlying graph database

[Can Altineller]

Hello,

I had read a blog post saying not to pay any attention to the underlying
graph database that freebase uses - but I am curious.
What kind of representation of a graph freebase uses, and how is it
persisted? Does freebase use a database, or an oodbms or a lucene index?

Best Regards,
-C.A.
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