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DBMS > Blueflood vs. Dolt vs. EXASOL vs. openGemini

System Properties Comparison Blueflood vs. Dolt vs. EXASOL vs. openGemini

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Editorial information provided by DB-Engines
NameBlueflood  Xexclude from comparisonDolt  Xexclude from comparisonEXASOL  Xexclude from comparisonopenGemini  Xexclude from comparison
DescriptionScalable TimeSeries DBMS based on CassandraA MySQL compatible DBMS with Git-like versioning of data and schemaHigh-performance, in-memory, MPP database specifically designed for in-memory analytics.An open source distributed Time Series DBMS with high concurrency, high performance, and high scalability
Primary database modelTime Series DBMSRelational DBMSRelational DBMSTime Series DBMS
Secondary database modelsDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#352  Overall
#36  Time Series DBMS
Score0.93
Rank#194  Overall
#90  Relational DBMS
Score1.66
Rank#138  Overall
#64  Relational DBMS
Score0.00
Rank#385  Overall
#40  Time Series DBMS
Websiteblueflood.iogithub.com/­dolthub/­dolt
www.dolthub.com
www.exasol.comwww.opengemini.org
github.com/­openGemini
Technical documentationgithub.com/­rax-maas/­blueflood/­wikidocs.dolthub.comwww.exasol.com/­resourcesdocs.opengemini.org/­guide
DeveloperRackspaceDoltHub IncExasolHuawei and openGemini community
Initial release2013201820002022
Current release1.1, July 2023
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoApache Version 2.0commercialOpen Source infoApache Version 2.0
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaGoGo
Server operating systemsLinux
OS X
Linux
macOS
Windows
Linux
Windows
Data schemepredefined schemeyesyesschema-free
Typing infopredefined data types such as float or dateyesyesyesInteger, Float, Boolean, String
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 indexesnoyesyesyes
SQL infoSupport of SQLnoyesyesSQL-like query language
APIs and other access methodsHTTP RESTCLI Client
HTTP REST
.Net
JDBC
ODBC
WebSocket
HTTP REST
Supported programming languagesAda
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
Java
Lua
Python
R
C
C++
Go
Java
JavaScript (Node.js)
Python
Rust
Server-side scripts infoStored proceduresnoyes infocurrently in alpha releaseuser defined functionsno
Triggersnoyesyesno
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on CassandranoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on CassandraA database can be cloned to multiple locations and be used there in isolation. Data/schema changes can be pushed/pulled explicitly between locations.yes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes infoHadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate Consistency
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlnoOnly one user is configurable, and must be specified in the config file at startupAccess rights for users, groups and roles according to SQL-standardAdministrators and common users accounts

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More resources
BluefloodDoltEXASOLopenGemini
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