DBMS > Dgraph vs. Oracle Rdb vs. TimesTen
System Properties Comparison Dgraph vs. Oracle Rdb vs. TimesTen
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|Editorial information provided by DB-Engines|
|Name||Dgraph Xexclude from comparison||Oracle Rdb Xexclude from comparison||TimesTen Xexclude from comparison|
|Description||Distributed and scalable native Graph DBMS||In-Memory RDBMS compatible to Oracle|
|Primary database model||Graph DBMS||Relational DBMS||Relational DBMS|
|Developer||Dgraph Labs, Inc.||Oracle, originally developed by Digital Equipment Corporation (DEC)||Oracle, TimesTen Performance Software, HP originally founded in HP Labs it was acquired by Oracle in 2005|
|Current release||188.8.131.52, 2021||11 Release 2 (184.108.40.206.0)|
|License Commercial or Open Source||Open Source Apache 2.0||commercial||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||Linux|
|HP Open VMS||AIX|
|Data scheme||schema-free||Flexible Schema (defined schema, partial schema, schema free)||yes|
|Typing predefined data types such as float or date||yes||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||no|
|SQL Support of SQL||no||yes||yes|
|APIs and other access methods||GraphQL query language|
gRPC (using protocol buffers) API
Oracle Call Interface (OCI)
|Supported programming languages||C#|
|Server-side scripts Stored procedures||no||PL/SQL|
|Partitioning methods Methods for storing different data on different nodes||yes||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Synchronous replication via Raft||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency or Eventual Consistency depending on configuration|
|Foreign keys Referential integrity||no||yes||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||yes, on a single node||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes by means of logfiles and checkpoints|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||no Planned for future releases||fine grained access rights according to SQL-standard|
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