MongoDB announces columnstore indexing for its document database

MongoDB, the company behind the document store database, has unveiled columnstore indexing designed to help developers build analytical queries into their applications. Set to preview later this year, the feature is designed to allow developers to create a purpose-built index to accelerate analytical queries without requiring …

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"The licensing aspects of it are, frankly, something that have not really been a headwind to our business."

Well, yes. So, in reality it's going to be 4.4 for ever for on-prem installations.