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Many NoSQL products have sharding built-in. The DBMS itself looks after storing a particular key range on a certain server and keeping redundant copies for high availability. Client connections are routed within the DBMS rather than in the application. Multi-server scale out becomes easy, at the cost of CAP compromises.


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How you did delete the edges? Please use DELETE VERTEX, not plain SQL DELETE to preserve edges. Starting from 2.0.x, OrientDB provided a warning to avoid deletion of verices/edges by using SQL DELETE.



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