Best practice for dump meta

I have many entities. For each sparql query I fetch meta data for each entity.
What’s the best practice for create dump table with meta for each entity (for example entity,wikiurl,picture_meta).
And how I can make query to table for fetch meta data?

Virtuoso supports SPARQL in SQL , thus if you have RDF data in Virtuoso and want to transform to SQL this possible, as detailed in this post on How Virtuoso extends SQL with SPARQL — and vice versa