Realm Database comes from the YCombinator LLC. which was founded by Alexander Stigsen and Bjarne Christiansen in 2011. They started the project called TightDB in the end of 2010 and renamed it to Realm in September, 2014. Realm was officially announced and open-sourced to the developers from over the world in 2016. Later in January 2017 its first stable version was released.
Multi-version Concurrency Control (MVCC)
In Realm, each connected thread will see a snapshot of the data at a particular point in time. Moreover, it utilizes the copy-on-write mechanism and allows only one client to modify data at a certain point.
Virtual Views Materialized Views
Realm database supports reflective views and imperative views. Essentially they are very similar to materialized views and virtual views.
Decomposition Storage Model (Columnar)
Properties would be kept contiguously linked at the vertical level.
https://realm.io/products/realm-database
Realm
2011
tight.db
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