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DBMS > CrateDB vs. HarperDB vs. MongoDB

System Properties Comparison CrateDB vs. HarperDB vs. MongoDB

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Editorial information provided by DB-Engines
NameCrateDB  Xexclude from comparisonHarperDB  Xexclude from comparisonMongoDB  Xexclude from comparison
DescriptionDistributed Date Store based on LuceneA distributed database focused on speed and ease of use. It has an intuitive REST API, and supports NoSQL and SQL including joins. HarperDB leverages standard interfaces, and users can be up and running in minutes.One of the most popular document stores available both as a fully managed cloud service and for deployment on self-managed infrastructure
Primary database modelRelational DBMS
Search engine
Document storeDocument store
Secondary database modelsDocument store
Time Series DBMS
Spatial DBMS
Search engine infointegrated Lucene index, currently in MongoDB Atlas only.
Time Series DBMS infoTime Series Collections introduced in Release 5.0
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.83
Rank#194  Overall
#95  Relational DBMS
#12  Search engines
Score0.82
Rank#197  Overall
#31  Document stores
Score496.54
Rank#5  Overall
#1  Document stores
Websitecrate.ioharperdb.iowww.mongodb.com
Technical documentationcrate.io/­docsharperdb.io/­developers/­documentation/­overviewdocs.mongodb.com/­manual
DeveloperCrateHarperDBMongoDB, Inc
Initial release201320172009
Current release3.0, May 20215.0, July 2021
License infoCommercial or Open SourceOpen Sourcecommercial infofree community edition availableOpen Source infoMongoDB Inc.'s Server Side Public License v1. Prior versions were published under GNU AGPL v3.0. Commercial licenses are also available.
Cloud-based only infoOnly available as a cloud servicenonono infoMongoDB available as DBaaS (MongoDB Atlas)
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
HarperDB Cloud: Get To Market Faster, For Less Money Using Our Built-in API.
  • 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.
  • ScaleGrid for MongoDB: Fully managed hosting for MongoDB database on AWS, Azure and DigitalOcean with high availability and SSH access on the #1 multi-cloud DBaaS.
Implementation languageJavaNode.jsC++
Server operating systemsAll OS with a Java 7 (and higher) VMLinux
OS X
Linux
OS X
Solaris
Windows
Data schemeFlexible Schema (defined schema, partial schema, schema free)dynamic schemaschema-free infoAlthough 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.
Typing infopredefined data types such as float or dateyesyes infoJSON data typesyes infostring, integer, double, decimal, boolean, date, object_id, geospatial
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.nono
Secondary indexesyesyesyes
SQL infoSupport of SQLyes, but no triggers and constraintsSQL-like data manipulation statementsRead-only SQL queries via the MongoDB Connector for BI
APIs and other access methodsADO.NET infocommunity maintained client
JDBC
MQTT (Message Queue Telemetry Transport)
PostgreSQL wire protocol
Prometheus Remote Read/Write
RESTful HTTP API
JDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
proprietary protocol using JSON
Supported programming languagesErlang
Go infocommunity maintained client
Java
JavaScript (Node.js) infocommunity maintained client
Perl infocommunity maintained client
PHP
Python
Ruby infocommunity maintained client
Scala infocommunity maintained client
.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
Actionscript infounofficial driver
C
C#
C++
Clojure infounofficial driver
ColdFusion infounofficial driver
D infounofficial driver
Dart infounofficial driver
Delphi infounofficial driver
Erlang
Go
Groovy infounofficial driver
Haskell
Java
JavaScript
Lisp infounofficial driver
Lua infounofficial driver
MatLab infounofficial driver
Perl
PHP
PowerShell infounofficial driver
Prolog infounofficial driver
Python
R infounofficial driver
Ruby
Rust
Scala
Smalltalk infounofficial driver
Swift
Server-side scripts infoStored proceduresuser defined functionsnoJavaScript
Triggersnonoyes infoin MongoDB Atlas only
Partitioning methods infoMethods for storing different data on different nodesShardingA table resides as a whole on one (or more) nodes in a clusterSharding infoPartitioned by hashed, ranged, or zoned sharding keys. Live resharding allows users to change their shard keys as an online operation with zero downtime.
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factoryes infothe nodes on which a table resides can be definedMulti-Source deployments with MongoDB Atlas Global Clusters
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Read Your Own Writes Consistency infofor primary key lookups
Immediate ConsistencyEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Foreign keys infoReferential integritynonono infotypically not used, however similar functionality with DBRef possible
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infounique row identifiers can be used for implementing an optimistic concurrency control strategyAtomic execution of specific operationsMulti-document ACID Transactions with snapshot isolation
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyes, using LMDByes infooptional, enabled by default
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes infoIn-memory storage engine introduced with MongoDB version 3.2
User concepts infoAccess controlrights management via user accountsAccess rights for users and rolesAccess rights for users and roles
More information provided by the system vendor
CrateDBHarperDBMongoDB
Specific characteristicsCrateDB is an open source distributed SQL database that spreads data and processing...
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HarperDB is the first distributed database with hybrid SQL & NoSQL functionality...
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MongoDB’s application data platform provides developers a unified interface to power...
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Competitive advantagesCrateDB is typically used in operational analytics applications, particularly those...
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By combining the functionality of the best SQL, NoSQL, and NewSQL products on the...
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The MongoDB platform can be used by developers building transactional, operational,...
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Typical application scenariosCrateDB is ideal for integrating and analyzing streams of data--often machine-generated--in...
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Use cases where HarperDB is a better fit than other solutions include: Rapid app...
» more
Internet of Things and Time Series (Bosch, Jaguar Land Rover) Mobile (The Weather...
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Key customersCrateDB customers include McAfee, Qualtrics , Nokia, NBC Golfnow , Digital Domain...
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A few highlighted customers include: US Army, US Airforce, Chelan PUD, TATA, & Lumen....
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ADP, Adobe, Amadeus, AstraZeneca, Auto Trader, Barclays, BBVA, Bosch, Cisco, CERN,...
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Market metricsThe CrateDB open source project was started in 2014. CrateDB was the winner of TechCrunch...
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6,800 + npm downloads 1,600 + on Docker Hub 2,600 + cloud & local signups
» more
175 million downloads, over 1.5M Atlas database clusters under management handling...
» more
Licensing and pricing modelsCrateDB pricing CrateDB Community Edition is open source and free to use under the...
» more
HarperDB follows a freemium/premium model . A database is only as powerful as it...
» more
MongoDB database server: Server-Side Public License (SSPL) . Commercial licenses...
» more
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Navicat for MongoDB gives you a highly effective GUI interface for MongoDB database management, administration and development.
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ClusterControl: the only management system you’ll ever need to take control of your open source database infrastructure.
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CData: Connect to Big Data & NoSQL through standard Drivers.
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We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
CrateDBHarperDBMongoDB
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Recent citations in the news

CrateDB 4.5 takes distributed SQL database open source
24 March 2021, TechTarget

Crate.io Expands CrateDB Cloud with the Launch of CrateDB Edge
15 April 2021, GlobeNewswire

Crate.io Open Sources the Entire Codebase of CrateDB – the
24 March 2021, GlobeNewswire

CrateDB 4.5 is Now Available as an Open Source Database
25 March 2021, Database Trends and Applications

Crate.io Announces CrateDB Will Switch to an Elasticsearch Fork Following License Change
11 February 2021, GlobeNewswire

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Which Database Is Right For You? HarperDB vs. MongoDB vs. PostgreSQL
14 March 2021, hackernoon.com

Greensburg Central Catholic's Blahovec commits to Youngstown State | Trib HSSN
23 July 2021, TribLIVE

HarperDB Releases HarperDB Cloud - PRNewswire
22 April 2020, PRNewswire

HarperDB: It’s all about the (open) DBaaS
20 July 2020, ComputerWeekly.com

HarperDB: An underdog SQL / NoSQL database
7 February 2018, ZDNet

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MongoDB adds scaling, compliance boosts to version 5.0 of its database platform
14 July 2021, VentureBeat

MongoDB Atlas Adds Serverless Option
30 July 2021, Motley Fool

DigitalOcean and MongoDB Partner to Give Developers Flexibility to Focus on Apps
2 July 2021, Database Trends and Applications

MongoDB Has Growth Opportunities Beyond the Database
6 July 2021, Motley Fool

MongoDB 5.0: New Features & Updates Explained
19 July 2021, Analytics India Magazine

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