DBMS > Dgraph vs. YDB
System Properties Comparison Dgraph vs. YDB
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|Editorial information provided by DB-Engines|
|Name||Dgraph Xexclude from comparison||YDB Xexclude from comparison|
|Description||Distributed and scalable native Graph DBMS||A distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API|
|Primary database model||Graph DBMS||Document store|
|Developer||Dgraph Labs, Inc.||Yandex|
|License Commercial or Open Source||Open Source Apache 2.0||Open Source Apache 2.0; commercial license available|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Data scheme||schema-free||Flexible Schema (defined schema, partial schema, schema free)|
|Typing predefined data types such as float or date||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no||no|
|SQL Support of SQL||no||SQL-like query language (YQL)|
|APIs and other access methods||GraphQL query language|
gRPC (using protocol buffers) API
|RESTful HTTP API (DynamoDB compatible)|
|Supported programming languages||C#|
|Server-side scripts Stored procedures||no||no|
|Partitioning methods Methods for storing different data on different nodes||yes||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Synchronous replication via Raft||Active-passive shard replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no|
|User concepts Access control||no Planned for future releases||Access rights defined for Yandex Cloud users|
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