DBMS > H2 vs. MongoDB vs. NebulaGraph
System Properties Comparison H2 vs. MongoDB vs. NebulaGraph
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|Editorial information provided by DB-Engines|
|Name||H2 Xexclude from comparison||MongoDB Xexclude from comparison||NebulaGraph Xexclude from comparison|
|Description||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||One of the most popular document stores available both as a fully managed cloud service and for deployment on self-managed infrastructure||A distributed, linear scalable, high perfomant Graph DBMS|
|Primary database model||Relational DBMS||Document store||Graph DBMS|
|Secondary database models||Spatial DBMS||Spatial DBMS|
Search engine integrated Lucene index, currently in MongoDB Atlas only.
Time Series DBMS Time Series Collections introduced in Release 5.0
Vector DBMS currently available in the MongoDB Atlas cloud service only
|Developer||Thomas Mueller||MongoDB, Inc||Vesoft Inc.|
|Current release||2.2.220, July 2023||6.0.7, June 2023|
|License Commercial or Open Source||Open Source dual-licence (Mozilla public license, Eclipse public license)||Open Source MongoDB Inc.'s Server Side Public License v1. Prior versions were published under GNU AGPL v3.0. Commercial licenses are also available.||Open Source Apache Version 2.0 + Common Clause 1.0|
|Cloud-based only Only available as a cloud service||no||no MongoDB available as DBaaS (MongoDB Atlas)||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|MongoDB Atlas: Global multi-cloud database with unmatched data distribution and mobility across AWS, Azure, and Google Cloud, built-in automation for resource and workload optimization, and so much more.|
|Server operating systems||All OS with a Java VM||Linux|
|Data scheme||yes||schema-free Although schema-free, documents of the same collection often follow the same structure. Optionally impose all or part of a schema by defining a JSON schema.||Strong typed schema|
|Typing predefined data types such as float or date||yes||yes string, integer, double, decimal, boolean, date, object_id, geospatial||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||yes||yes Nebula 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 Support of SQL||yes||Read-only SQL queries via the MongoDB Atlas SQL Interface||SQL-like query language|
|APIs and other access methods||JDBC|
proprietary protocol using JSON
Cypher Query Language
GO Object Graph Mapper
Java Object Graph Mapper
NGBatis ORM framework for NebulaGraph and Spring-Boot
Proprietary native API
Python Object Graph Mapper
Query language nGQL
|Supported programming languages||Java||Actionscript unofficial driver|
Clojure unofficial driver
ColdFusion unofficial driver
D unofficial driver
Dart unofficial driver
Delphi unofficial driver
Groovy unofficial driver
Lisp unofficial driver
Lua unofficial driver
MatLab unofficial driver
PowerShell unofficial driver
Prolog unofficial driver
R unofficial driver
Smalltalk unofficial driver
|Triggers||yes||yes in MongoDB Atlas only|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding Partitioned by hashed, ranged, or zoned sharding keys. Live resharding allows users to change their shard keys as an online operation with zero downtime.||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||With clustering: 2 database servers on different computers operate on identical copies of a database||Multi-Source deployments with MongoDB Atlas Global Clusters|
|Causal Clustering using Raft protocol|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency can be individually decided for each read operation|
Immediate Consistency default behaviour
|Foreign keys Referential integrity||yes||no typically not used, however similar functionality with DBRef possible||yes Relationships in graphs|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||Multi-document ACID Transactions with snapshot isolation||ACID|
|Concurrency Support for concurrent manipulation of data||yes, multi-version concurrency control (MVCC)||yes||yes|
|Durability Support for making data persistent||yes||yes optional, enabled by default||yes using RocksDB|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes In-memory storage engine introduced with MongoDB version 3.2||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Access rights for users and roles||Role-based access control|
|More information provided by the system vendor|
|Specific characteristics||MongoDB provides an integrated suite of cloud database and data services to accelerate...|
|NebulaGraph is a truly distributed, linearly scalable, lightning-fast graph database,...|
|Competitive advantages||Built around the flexible document data model and unified API, MongoDB is a developer...|
|NebulaGraph boasts the world's only graph database solution that is able to host...|
|Typical application scenarios||AI-enriched intelligent apps (Continental, Telefonica, Iron Mountain) Internet of...|
|Social networking Fraud detection Knowledge graph Data warehouse management Anti...|
|Key customers||ADP, Adobe, Amadeus, AstraZeneca, Auto Trader, Barclays, BBVA, Bosch, Cisco, CERN,...|
|Currently we have some top internet companies in China implementing NebulaGraph in...|
|Market metrics||Hundreds of millions downloads, over 150,000+ Atlas clusters provisioned every month...|
|At our very early stage, NebulaGraph has already received over 8,200 stars and thousands...|
|Licensing and pricing models||MongoDB database server: Server-Side Public License (SSPL) . Commercial licenses...|
|NebulaGraph is open source and free to use under Apache 2.0 license.|
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