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DBMS > Firebase Realtime Database vs. OpenTSDB vs. Oracle Coherence vs. WakandaDB

System Properties Comparison Firebase Realtime Database vs. OpenTSDB vs. Oracle Coherence vs. WakandaDB

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Editorial information provided by DB-Engines
NameFirebase Realtime Database  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonWakandaDB  Xexclude from comparison
DescriptionCloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.Scalable Time Series DBMS based on HBaseOracles in-memory data grid solutionWakandaDB is embedded in a server that provides a REST API and a server-side javascript engine to access data
Primary database modelDocument storeTime Series DBMSKey-value storeObject oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score14.29
Rank#39  Overall
#6  Document stores
Score1.68
Rank#146  Overall
#12  Time Series DBMS
Score1.92
Rank#130  Overall
#22  Key-value stores
Score0.03
Rank#364  Overall
#17  Object oriented DBMS
Websitefirebase.google.com/­products/­realtime-databaseopentsdb.netwww.oracle.com/­java/­coherencewakanda.github.io
Technical documentationfirebase.google.com/­docs/­databaseopentsdb.net/­docs/­build/­html/­index.htmldocs.oracle.com/­en/­middleware/­standalone/­coherencewakanda.github.io/­doc
DeveloperGoogle infoacquired by Google 2014currently maintained by Yahoo and other contributorsOracleWakanda SAS
Initial release2012201120072012
Current release14.1, August 20232.7.0 (April 29, 2019), April 2019
License infoCommercial or Open SourcecommercialOpen Source infoLGPLcommercialOpen Source infoAGPLv3, extended commercial license available
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaC++, JavaScript
Server operating systemshostedLinux
Windows
All OS with a Java VMLinux
OS X
Windows
Data schemeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or dateyesnumeric data for metrics, strings for tagsyesyes
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.nononono
Secondary indexesyesnono
SQL infoSupport of SQLnononono
APIs and other access methodsAndroid
iOS
JavaScript API
RESTful HTTP API
HTTP API
Telnet API
JCache
JPA
RESTful HTTP API
RESTful HTTP API
Supported programming languagesJava
JavaScript
Objective-C
Erlang
Go
Java
Python
R
Ruby
.Net
C++
Java
JavaScript
Server-side scripts infoStored procedureslimited functionality with using 'rules'nonoyes
TriggersCallbacks are triggered when data changesnoyes infoLive Eventsyes
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on HBaseShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on HBaseyes, with selectable consistency levelnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infoif the client is offline
Immediate Consistency infoif the client is online
Immediate Consistency infobased on HBaseEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesnoconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
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.noyesno
User concepts infoAccess controlyes, based on authentication and database rulesnoauthentification to access the cache via certificates or http basic authenticationyes

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More resources
Firebase Realtime DatabaseOpenTSDBOracle CoherenceWakandaDB
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