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DBMS > etcd vs. Snowflake vs. SQream DB vs. SwayDB vs. YDB

System Properties Comparison etcd vs. Snowflake vs. SQream DB vs. SwayDB vs. YDB

Editorial information provided by DB-Engines
Nameetcd  Xexclude from comparisonSnowflake  Xexclude from comparisonSQream DB  Xexclude from comparisonSwayDB  Xexclude from comparisonYDB  Xexclude from comparison
DescriptionA distributed reliable key-value storeCloud-based data warehousing service for structured and semi-structured dataa GPU-based, columnar RDBMS for big data analytics workloadsAn embeddable, non-blocking, type-safe key-value store for single or multiple disks and in-memory storageA distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API
Primary database modelKey-value storeRelational DBMSRelational DBMSKey-value storeDocument store
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.25
Rank#54  Overall
#5  Key-value stores
Score121.33
Rank#9  Overall
#6  Relational DBMS
Score0.70
Rank#227  Overall
#104  Relational DBMS
Score0.00
Rank#382  Overall
#59  Key-value stores
Score0.35
Rank#278  Overall
#43  Document stores
#127  Relational DBMS
Websiteetcd.io
github.com/­etcd-io/­etcd
www.snowflake.comsqream.comswaydb.simer.augithub.com/­ydb-platform/­ydb
ydb.tech
Technical documentationetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
docs.snowflake.net/­manuals/­index.htmldocs.sqream.comydb.tech/­en/­docs
DeveloperSnowflake Computing Inc.SQream TechnologiesSimer PlahaYandex
Initial release2014201720182019
Current release3.4, August 20192022.1.6, December 2022
License infoCommercial or Open SourceOpen Source infoApache Version 2.0commercialcommercialOpen Source infoGNU Affero GPL V3.0Open Source infoApache 2.0; commercial license available
Cloud-based only infoOnly available as a cloud servicenoyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoC++, CUDA, Haskell, Java, ScalaScala
Server operating systemsFreeBSD
Linux
Windows infoexperimental
hostedLinuxLinux
Data schemeschema-freeyes infosupport of semi-structured data formats (JSON, XML, Avro)yesschema-freeFlexible Schema (defined schema, partial schema, schema free)
Typing infopredefined data types such as float or datenoyesyes, ANSI Standard SQL Typesnoyes
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.noyesnono
Secondary indexesnononoyes
SQL infoSupport of SQLnoyesyesnoSQL-like query language (YQL)
APIs and other access methodsgRPC
JSON over HTTP
CLI Client
JDBC
ODBC
.Net
JDBC
ODBC
RESTful HTTP API (DynamoDB compatible)
Supported programming languages.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
JavaScript (Node.js)
Python
C++
Java
JavaScript (Node.js)
Python
Java
Kotlin
Scala
Go
Java
JavaScript (Node.js)
PHP
Python
Server-side scripts infoStored proceduresnouser defined functionsuser defined functions in Pythonnono
Triggersyes, watching key changesno infosimilar concept for controling cloud resourcesnono
Partitioning methods infoMethods for storing different data on different nodesyeshorizontal and vertical partitioningnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.yesnonenoneActive-passive shard replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDAtomic execution of operationsACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyesno
User concepts infoAccess controlnoUsers with fine-grained authorization concept, user roles and pluggable authenticationnoAccess rights defined for Yandex Cloud users

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More resources
etcdSnowflakeSQream DBSwayDBYDB
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