DBMS > CouchDB vs. Dgraph
System Properties Comparison CouchDB vs. Dgraph
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|Editorial information provided by DB-Engines|
|Name||CouchDB stands for "Cluster Of Unreliable Commodity Hardware" Xexclude from comparison||Dgraph Xexclude from comparison|
|Description||A native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.||Distributed and scalable native Graph DBMS|
|Primary database model||Document store||Graph DBMS|
|Secondary database models||Spatial DBMS using the Geocouch extension|
|Developer||Apache Software Foundation Apache top-level project, originally developed by Damien Katz, a former Lotus Notes developer||Dgraph Labs, Inc.|
|Current release||3.3.1, January 2023|
|License Commercial or Open Source||Open Source Apache version 2||Open Source Apache 2.0|
|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||Android|
|Typing predefined data types such as float or date||no||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|
|Secondary indexes||yes via views||yes|
|SQL Support of SQL||no||no|
|APIs and other access methods||RESTful HTTP/JSON API||GraphQL query language|
gRPC (using protocol buffers) API
|Supported programming languages||C|
|Partitioning methods Methods for storing different data on different nodes||Sharding improved architecture with release 2.0||yes|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|Synchronous replication via Raft|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no atomic operations within a single document possible||ACID|
|Concurrency Support for concurrent manipulation of data||yes strategy: optimistic locking||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||Access rights for users can be defined per database||no Planned for future releases|
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|CouchDB stands for "Cluster Of Unreliable Commodity Hardware"||Dgraph|
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