MongoDB 3.4 continues the trend of databases building out support for a range of conceptual data models over the same underlying data store. This multimodel approach aims to deliver a single database that can be used to store data as documents, tables, and graphs simultaneously. The benefit to the user is a dramatically simplified infrastructure when compared to a polyglot persistence model, which might entail managing three or four separate data stores to satisfy those different use cases.
MongoDB 3.4 introduces the ability to perform recursive graph queries. It was co-released last November with version 2.0 of the BI connector, which provides the ability to query MongoDB using a SQL interface through tools like Tableau and Qlik. Also, aggregation operators were added to greatly enhance the ease and performance of facet-style interactions.
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