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DBMS > chDB vs. Firebase Realtime Database vs. SQream DB vs. VelocityDB

System Properties Comparison chDB vs. Firebase Realtime Database vs. SQream DB vs. VelocityDB

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Editorial information provided by DB-Engines
NamechDB  Xexclude from comparisonFirebase Realtime Database  Xexclude from comparisonSQream DB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionAn embedded SQL OLAP Engine powered by ClickHouseCloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.a GPU-based, columnar RDBMS for big data analytics workloadsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelRelational DBMSDocument storeRelational DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.07
Rank#376  Overall
#158  Relational DBMS
Score13.64
Rank#39  Overall
#6  Document stores
Score0.74
Rank#224  Overall
#103  Relational DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitegithub.com/­chdb-io/­chdbfirebase.google.com/­products/­realtime-databasesqream.comvelocitydb.com
Technical documentationdoc.chdb.iofirebase.google.com/­docs/­databasedocs.sqream.comvelocitydb.com/­UserGuide
DeveloperGoogle infoacquired by Google 2014SQream TechnologiesVelocityDB Inc
Initial release2023201220172011
Current release2022.1.6, December 20227.x
License infoCommercial or Open SourceOpen Source infoApache Version 2.0commercialcommercialcommercial
Cloud-based only infoOnly available as a cloud servicenoyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++, CUDA, Haskell, Java, ScalaC#
Server operating systemsserver-lesshostedLinuxAny that supports .NET
Data schemeschema-freeyesyes
Typing infopredefined data types such as float or dateyesyes, ANSI Standard SQL Typesyes
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 indexesyesnoyes
SQL infoSupport of SQLClose to ANSI SQL (SQL/JSON + extensions)noyesno
APIs and other access methodsAndroid
iOS
JavaScript API
RESTful HTTP API
.Net
JDBC
ODBC
.Net
Supported programming languagesBun
C
C++
Go
JavaScript (Node.js)
Python
Rust
Java
JavaScript
Objective-C
C++
Java
JavaScript (Node.js)
Python
.Net
Server-side scripts infoStored procedureslimited functionality with using 'rules'user defined functions in Pythonno
TriggersCallbacks are triggered when data changesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodeshorizontal and vertical partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infoif the client is offline
Immediate Consistency infoif the client is online
Immediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlyes, based on authentication and database rulesBased on Windows Authentication

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More resources
chDBFirebase Realtime DatabaseSQream DBVelocityDB
DB-Engines blog posts

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