DB-EnginesInfluxDB: Focus on building software with an easy-to-use serverless, scalable time series platformEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > Dgraph vs. KeyDB vs. Oracle Coherence vs. PostgreSQL

System Properties Comparison Dgraph vs. KeyDB vs. Oracle Coherence vs. PostgreSQL

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonKeyDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonPostgreSQL  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsOracles in-memory data grid solutionWidely used open source RDBMS infoDeveloped as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL
Primary database modelGraph DBMSKey-value storeKey-value storeRelational DBMS infowith object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.51
Rank#139  Overall
#11  Graph DBMS
Score0.32
Rank#266  Overall
#40  Key-value stores
Score2.55
Rank#110  Overall
#20  Key-value stores
Score606.56
Rank#4  Overall
#4  Relational DBMS
Websitedgraph.iogithub.com/­JohnSully/­KeyDB
keydb.dev
www.oracle.com/­middleware/­technologies/­coherence.htmlwww.postgresql.org
Technical documentationdgraph.io/­docsdocs.keydb.devdocs.oracle.com/­en/­middleware/­standalone/­coherencewww.postgresql.org/­docs
DeveloperDgraph Labs, Inc.EQ Alpha Technology Ltd.OraclePostgreSQL Global Development Group infowww.postgresql.org/­developer
Initial release2016201920071989 info1989: Postgres, 1996: PostgreSQL
Current release12c, September 201614.1, November 2021
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoBSD-3commercialOpen Source infoBSD
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
ScaleGrid for PostgreSQL: Fully managed PostgreSQL hosting on AWS, Azure and DigitalOcean with high availability and SSH access on the #1 multi-cloud DBaaS.
Implementation languageGoC++JavaC
Server operating systemsLinux
OS X
Windows
LinuxAll OS with a Java VMFreeBSD
HP-UX
Linux
NetBSD
OpenBSD
OS X
Solaris
Unix
Windows
Data schemeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyesyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nononoyes infospecific XML-type available, but no XML query functionality.
Secondary indexesyesyes infoby using the Redis Search modulenoyes
SQL infoSupport of SQLnononoyes infostandard with numerous extensions
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
Proprietary protocol infoRESP - REdis Serialization ProtocoJCache
JPA
RESTful HTTP API
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
.Net
C++
Java
.Net
C
C++
Delphi
Java infoJDBC
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Server-side scripts infoStored proceduresnoLuanouser defined functions inforealized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.
Triggersnonoyes infoLive Eventsyes
Partitioning methods infoMethods for storing different data on different nodesyesShardingShardingpartitioning by range, list and (since PostgreSQL 11) by hash
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via RaftMulti-source replication
Source-replica replication
yes, with selectable consistency levelSource-replica replication infoother methods possible by using 3rd party extensions
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Strong eventual consistency with CRDTs
Eventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDOptimistic locking, atomic execution of commands blocks and scriptsconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlno infoPlanned for future releasessimple password-based access control and ACLauthentification to access the cache via certificates or http basic authenticationfine grained access rights according to SQL-standard
More information provided by the system vendor
DgraphKeyDBOracle CoherencePostgreSQL
Competitive advantagesHorizontally scalable transactional graph database with fast arbitrary-depth joins...
» more

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services
3rd partiesSQLFlow: Provides a visual representation of the overall flow of data. Automated SQL data lineage analysis across Databases, ETL, Business Intelligence, Cloud and Hadoop environments by parsing SQL Script and stored procedure.
» more

Fivetran: Quickly and easily centralize your on-premise and cloud databases.
» more

Navicat for PostgreSQL is an easy-to-use graphical tool for PostgreSQL database development.
» more

Instaclustr: Fully Hosted & Managed PostgreSQL
» more

pgDash: In-Depth PostgreSQL Monitoring.
» more

EDB: BigAnimal is fully-managed PostgreSQL in the cloud from the database fanatics at EDB.
» more

CYBERTEC is your professional partner for PostgreSQL services and Data Science since 2000. With offices in Austria, Uruguay, Estonia, Poland, South Africa and Switzerland, CYBERTEC operates worldwide and is here for you 24/7!
» more

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
DgraphKeyDBOracle CoherencePostgreSQL
DB-Engines blog posts

Snowflake is the DBMS of the Year 2021
3 January 2022, Paul Andlinger, Matthias Gelbmann

Driving the Future of PostgreSQL Adoption
15 November 2021,  Umair Shahid, Percona (sponsor) 

The Inexorable Rise of PostgreSQL
24 September 2021,  Matt Yonkovit, Percona (sponsor) 

show all

Conferences and events

Postgres Build 2021
On Demand Talks, 30 November 2021 - 1 December 2021 (finished)

Recent citations in the news

Dgraph Rises to the Top Graph Database on GitHub With 11 G2 Badges and 11M Downloads
26 May 2021, Business Wire

Dgraph GraphQL database users detail graph use cases
20 April 2021, TechTarget

Gary Hagmueller Joins Dgraph Labs To Lead the Graph Platform Market Disruption
8 April 2021, Business Wire

Graph database reinvented: Dgraph secures $11.5M to pursue its unique and opinionated path
31 July 2019, ZDNet

Dgraph raises $11.5 million for scalable graph database solutions
31 July 2019, VentureBeat

provided by Google News

Beyond the mainstream database offerings
26 March 2020, TechCentral.ie

provided by Google News

Coherence Community Edition Now Available
1 July 2020, Database Trends and Applications

Oracle Unveils Unified Container Deployment and Management Platform
3 August 2021, Container Journal

Oracle launches 5G Converged Charging System
12 February 2021, Capacity Media

Cameron Purdy Explains Ecstasy - a New Cloud Native Environment
10 June 2021, InfoQ.com

Micro Focus Announces Visual COBOL 7.0 and Enterprise Suite 7.0
20 September 2021, Database Trends and Applications

provided by Google News

The PostgresSQL Transition Guide Helps You Make The Switch
18 January 2022, iProgrammer

Dev's PostgreSQL experiment probes possibility of zero-downtime schema migration
12 January 2022, The Register

Crunchy Data Launches France Operations to Build on Momentum in Europe
3 January 2022, PRNewswire

Cloud Native Patterns with Postgres on K8s
17 January 2022, JAXenter

What Is PostgreSQL? | Open Source Database System
9 December 2021, Server Watch

provided by Google News

Job opportunities

Data Scientist, Senior
Booz Allen Hamilton, Annapolis Junction, MD

Senior QA Analyst - SaaS (REMOTE)
Leadr, Inc, Remote

Developer/Analyst, Senior (NJUS)
NetJets Services, Inc., Columbus, OH

Software Architect (REMOTE)
Leadr, Inc, Plano, TX

Innovation Lab Lead Developer - Cloud/AWS
NetJets Services, Inc., Columbus, OH

Backend Software Engineer
Health Recovery Solutions, Hoboken, NJ

Engineering Manager
Akamai, Cambridge, MA

Java Developer
PruTech Solutions, Charlotte, NC

JPC - 443 - Server Side Java Developer
Promantis Inc, Charlotte, NC

Senior Lead Site Reliability Engineer
S&P Global, Princeton, NJ

Java Developer
JPMorgan Chase Bank, N.A., Plano, TX

Senior Software Engineer - Java 8
Wells Fargo, Charlotte, NC

PostgreSQL Database Administrator
General Motors, Austin, TX

Database Administrator - MySQL/PostgreSQL
Rock Central, Detroit, MI

Technical Support Representative I
Dr Dispatch, Remote

Data Technician (Full- or Part-Time)
Thasos Group, New York, NY

Inside Sales Representative (remote)
Percona, Austin, TX

jobs by Indeed



Share this page

Featured Products

AllegroGraph logo

Graph Database Leader for AI Knowledge Graph Applications - The Most Secure Graph Database Available.
Free Download

MariaDB logo

SkySQL, the ultimate
MariaDB cloud, is here.

Get started with SkySQL today!

Datastax Astra logo

Build cloud-native apps fast with Astra, the open-source, multi-cloud stack for
modern data apps.
Get started with 80GB free.

Neo4j logo

See for yourself how a graph database can make your life easier.
Use Neo4j online for free.

Couchbase logo

The modern database for enterprise applications. Build fast. Scale Big. Save more.
Get started today.

Present your product here