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DBMS > Coveo vs. FoundationDB vs. Oracle Coherence vs. Realm

System Properties Comparison Coveo vs. FoundationDB vs. Oracle Coherence vs. Realm

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Editorial information provided by DB-Engines
NameCoveo  Xexclude from comparisonFoundationDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonRealm  Xexclude from comparison
Created as commercial project in 2013, FoundationDB has been acquired by Apple in March 2015 and was withdrawn from the market. As a consequence, the product was removed from the DB-Engines ranking. In April 2018, Apple open-sourced FoundationDB and it therefore reappears in the ranking.
DescriptionAI-powered hosted search, recommendation and personalization platform providing tools for both low-code and full-code developmentOrdered key-value store. Core features are complimented by layers.Oracles in-memory data grid solutionA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Data
Primary database modelSearch engineDocument store infosupported via specific layer
Key-value store
Relational DBMS infosupported via specific SQL-layer
Key-value storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.28
Rank#114  Overall
#11  Search engines
Score1.03
Rank#190  Overall
#31  Document stores
#28  Key-value stores
#89  Relational DBMS
Score1.92
Rank#130  Overall
#22  Key-value stores
Score7.60
Rank#52  Overall
#9  Document stores
Websitewww.coveo.comgithub.com/­apple/­foundationdbwww.oracle.com/­java/­coherencerealm.io
Technical documentationdocs.coveo.comapple.github.io/­foundationdbdocs.oracle.com/­en/­middleware/­standalone/­coherencerealm.io/­docs
DeveloperCoveoFoundationDBOracleRealm, acquired by MongoDB in May 2019
Initial release2012201320072014
Current release6.2.28, November 202014.1, August 2023
License infoCommercial or Open SourcecommercialOpen Source infoApache 2.0commercialOpen Source
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++Java
Server operating systemshostedLinux
OS X
Windows
All OS with a Java VMAndroid
Backend: server-less
iOS
Windows
Data schemehybrid - fields need to be configured prior to indexing, but relationships can be exploited at query time without pre-configurationschema-free infosome layers support schemasschema-freeyes
Typing infopredefined data types such as float or dateyesno infosome layers support typingyesyes
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.nonono
Secondary indexesyesnonoyes
SQL infoSupport of SQLnosupported in specific SQL layer onlynono
APIs and other access methodsRESTful HTTP APIJCache
JPA
RESTful HTTP API
Supported programming languagesC#
Java
JavaScript
Python
.Net
C
C++
Go
Java
JavaScript infoNode.js
PHP
Python
Ruby
Swift
.Net
C++
Java
.Net
Java infowith Android only
Objective-C
React Native
Swift
Server-side scripts infoStored proceduresnoin SQL-layer onlynono inforuns within the applications so server-side scripts are unnecessary
Triggersyesnoyes infoLive Eventsyes infoChange Listeners
Partitioning methods infoMethods for storing different data on different nodesyesShardingShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesyesyesyes, with selectable consistency levelnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyLinearizable consistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesin SQL-layer onlynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesACIDconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes infoIn-Memory realm
User concepts infoAccess controlgranular access controls, API key management, content filtersnoauthentification to access the cache via certificates or http basic authenticationyes

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More resources
CoveoFoundationDBOracle CoherenceRealm
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