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DBMS > chDB vs. Microsoft Azure Cosmos DB vs. VoltDB

System Properties Comparison chDB vs. Microsoft Azure Cosmos DB vs. VoltDB

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Editorial information provided by DB-Engines
NamechDB  Xexclude from comparisonMicrosoft Azure Cosmos DB infoformer name was Azure DocumentDB  Xexclude from comparisonVoltDB  Xexclude from comparison
DescriptionAn embedded SQL OLAP Engine powered by ClickHouseGlobally distributed, horizontally scalable, multi-model database serviceDistributed In-Memory NewSQL RDBMS infoUsed for OLTP applications with a high frequency of relatively simple transactions, that can hold all their data in memory
Primary database modelRelational DBMSDocument store
Graph DBMS
Key-value store
Wide column store
Relational DBMS
Secondary database modelsTime Series DBMSSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#351  Overall
#150  Relational DBMS
Score23.95
Rank#27  Overall
#4  Document stores
#2  Graph DBMS
#3  Key-value stores
#3  Wide column stores
Score1.34
Rank#155  Overall
#71  Relational DBMS
Websitegithub.com/­chdb-io/­chdbazure.microsoft.com/­services/­cosmos-dbwww.voltdb.com
Technical documentationdoc.chdb.iolearn.microsoft.com/­azure/­cosmos-dbdocs.voltdb.com
DeveloperMicrosoftVoltDB Inc.
Initial release202320142010
Current release11.3, April 2022
License infoCommercial or Open SourceOpen Source infoApache Version 2.0commercialOpen Source infoAGPL for Community Edition, commercial license for Enterprise, AWS, and Pro Editions
Cloud-based only infoOnly available as a cloud servicenoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJava, C++
Server operating systemsserver-lesshostedLinux
OS X infofor development
Data schemeschema-freeyes
Typing infopredefined data types such as float or dateyes infoJSON typesyes
Secondary indexesyes infoAll properties auto-indexed by defaultyes
SQL infoSupport of SQLClose to ANSI SQL (SQL/JSON + extensions)SQL-like query languageyes infoonly a subset of SQL 99
APIs and other access methodsDocumentDB API
Graph API (Gremlin)
MongoDB API
RESTful HTTP API
Table API
Java API
JDBC
RESTful HTTP/JSON API
Supported programming languagesBun
C
C++
Go
JavaScript (Node.js)
Python
Rust
.Net
C#
Java
JavaScript
JavaScript (Node.js)
MongoDB client drivers written for various programming languages
Python
C#
C++
Erlang infonot officially supported
Go
Java
JavaScript infoNode.js
PHP
Python
Server-side scripts infoStored proceduresJavaScriptJava
TriggersJavaScriptno
Partitioning methods infoMethods for storing different data on different nodesSharding infoImplicit feature of the cloud serviceSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infoImplicit feature of the cloud serviceMulti-source replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integration infoIntegration with Hadoop/HDInsight on Azure*no
Consistency concepts infoMethods to ensure consistency in a distributed systemBounded Staleness
Consistent Prefix
Eventual Consistency
Immediate Consistency infoConsistency level configurable on request level
Session Consistency
Foreign keys infoReferential integritynono infoFOREIGN KEY constraints are not supported
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataMulti-item ACID transactions with snapshot isolation within a partitionACID infoTransactions are executed single-threaded within stored procedures
Concurrency infoSupport for concurrent manipulation of datayesyes infoData access is serialized by the server
Durability infoSupport for making data persistentyesyes infoSnapshots and command logging
User concepts infoAccess controlAccess rights can be defined down to the item levelUsers and roles with access to stored procedures

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More resources
chDBMicrosoft Azure Cosmos DB infoformer name was Azure DocumentDBVoltDB
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