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DBMS > etcd vs. Oracle Rdb vs. ReductStore vs. VelocityDB

System Properties Comparison etcd vs. Oracle Rdb vs. ReductStore vs. VelocityDB

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Editorial information provided by DB-Engines
Nameetcd  Xexclude from comparisonOracle Rdb  Xexclude from comparisonReductStore  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA distributed reliable key-value storeDesigned to manage unstructured time-series data efficiently, providing unique features such as storing time-stamped blobs with labels, customizable data retention policies, and a straightforward FIFO quota system.A .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelKey-value storeRelational DBMSTime Series DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.25
Rank#54  Overall
#5  Key-value stores
Score1.08
Rank#184  Overall
#85  Relational DBMS
Score0.00
Rank#383  Overall
#41  Time Series DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websiteetcd.io
github.com/­etcd-io/­etcd
www.oracle.com/­database/­technologies/­related/­rdb.htmlgithub.com/­reductstore
www.reduct.store
velocitydb.com
Technical documentationetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
www.oracle.com/­database/­technologies/­related/­rdb-doc.htmlwww.reduct.store/­docsvelocitydb.com/­UserGuide
DeveloperOracle, originally developed by Digital Equipment Corporation (DEC)ReductStore LLCVelocityDB Inc
Initial release198420232011
Current release3.4, August 20197.4.1.1, 20211.9, March 20247.x
License infoCommercial or Open SourceOpen Source infoApache Version 2.0commercialOpen Source infoBusiness Source License 1.1commercial
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 languageGoC++, RustC#
Server operating systemsFreeBSD
Linux
Windows infoexperimental
HP Open VMSDocker
Linux
macOS
Windows
Any that supports .NET
Data schemeschema-freeFlexible Schema (defined schema, partial schema, schema free)yes
Typing infopredefined data types such as float or datenoyesyes
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 indexesnoyesyes
SQL infoSupport of SQLnoyesno
APIs and other access methodsgRPC
JSON over HTTP
HTTP API.Net
Supported programming languages.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
C++
JavaScript (Node.js)
Python
Rust
.Net
Server-side scripts infoStored proceduresnono
Triggersyes, watching key changesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoyes, on a single nodeACID
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.nonoyes
User concepts infoAccess controlnoBased on Windows Authentication

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More resources
etcdOracle RdbReductStoreVelocityDB
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