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DBMS > Apache Doris vs. Cassandra vs. Datomic vs. Greenplum vs. NebulaGraph

System Properties Comparison Apache Doris vs. Cassandra vs. Datomic vs. Greenplum vs. NebulaGraph

Editorial information provided by DB-Engines
NameApache Doris  Xexclude from comparisonCassandra  Xexclude from comparisonDatomic  Xexclude from comparisonGreenplum  Xexclude from comparisonNebulaGraph  Xexclude from comparison
DescriptionAn MPP-based analytics DBMS embracing the MySQL protocolWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durabilityAnalytic Database platform built on PostgreSQL. Full name is Pivotal Greenplum Database infoA logical database in Greenplum is an array of individual PostgreSQL databases working together to present a single database image.A distributed, linear scalable, high perfomant Graph DBMS
Primary database modelRelational DBMSWide column storeRelational DBMSRelational DBMSGraph DBMS
Secondary database modelsVector DBMS infostarting with release V5Document store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.60
Rank#247  Overall
#113  Relational DBMS
Score98.83
Rank#12  Overall
#1  Wide column stores
Score1.66
Rank#144  Overall
#66  Relational DBMS
Score8.08
Rank#48  Overall
#31  Relational DBMS
Score2.23
Rank#116  Overall
#10  Graph DBMS
Websitedoris.apache.org
github.com/­apache/­doris
cassandra.apache.orgwww.datomic.comgreenplum.orggithub.com/­vesoft-inc/­nebula
www.nebula-graph.io
Technical documentationgithub.com/­apache/­doris/­wikicassandra.apache.org/­doc/­latestdocs.datomic.comdocs.greenplum.orgdocs.nebula-graph.io
DeveloperApache Software Foundation, originally contributed from BaiduApache Software Foundation infoApache top level project, originally developped by FacebookCognitectPivotal Software Inc.Vesoft Inc.
Initial release20172008201220052019
Current release1.2.2, February 20234.1.3, July 20231.0.6735, June 20237.0.0, September 2023
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infoApache version 2commercial infolimited edition freeOpen Source infoApache 2.0Open Source infoApache Version 2.0 + Common Clause 1.0
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Astra DB: Multi-cloud DBaaS built on Apache Cassandra.
Implementation languageJavaJavaJava, ClojureC++
Server operating systemsLinuxBSD
Linux
OS X
Windows
All OS with a Java VMLinuxLinux
Data schemeyesschema-freeyesyesStrong typed schema
Typing infopredefined data types such as float or dateyesyesyesyesyes
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 infosince Version 4.2no
Secondary indexesyesrestricted infoonly equality queries, not always the best performing solutionyesyesyes infoNebula Graph internally uses the Key-Value store RocksDB for persistency. The vertices, edges, and their properties are stored as Key while their values are stored as Value. The primary indexes are per Key and secondary indexes are per Value.
SQL infoSupport of SQLyesSQL-like SELECT, DML and DDL statements (CQL)noyesSQL-like query language
APIs and other access methodsJDBC
MySQL client
Proprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
RESTful HTTP APIJDBC
ODBC
Browser interface
console (shell)
Cypher Query Language
GO Object Graph Mapper
Java Object Graph Mapper
NGBatis infoORM framework for NebulaGraph and Spring-Boot
Proprietary native API
Python Object Graph Mapper
Query language nGQL
Supported programming languagesJavaC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
Clojure
Java
C
Java
Perl
Python
R
.Net
C++
Go
Java
PHP
Python
Server-side scripts infoStored proceduresuser defined functionsnoyes infoTransaction Functionsyesuser defined functions
TriggersnoyesBy using transaction functionsyes
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningSharding infono "single point of failure"none infoBut extensive use of caching in the application peersShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factor infoRepresentation of geographical distribution of servers is possiblenone infoBut extensive use of caching in the application peersSource-replica replicationCausal Clustering using Raft protocol
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Immediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyesyes infoRelationships in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyes infousing external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)yesyes infousing RocksDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes inforecommended only for testing and developmentnoyes
User concepts infoAccess controlfine grained access rights according to SQL-standardAccess rights for users can be defined per objectnofine grained access rights according to SQL-standardRole-based access control
More information provided by the system vendor
Apache DorisCassandraDatomicGreenplumNebulaGraph
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
NebulaGraph is a truly distributed, linearly scalable, lightning-fast graph database,...
» more
Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
» more
NebulaGraph boasts the world's only graph database solution that is able to host...
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Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
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Social networking Fraud detection Knowledge graph Data warehouse management Anti...
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Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
» more
Companies from a variety of industries have implemented NebulaGraph Database in production,...
» more
Market metricsCassandra is used by 40% of the Fortune 100.
» more
At our very early stage, NebulaGraph has already received over 10,000 stars on GitHub...
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
» more
NebulaGraph is open source and free to use under Apache 2.0 license.
» more
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