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DBMS > Alibaba Cloud PolarDB vs. KairosDB vs. Memgraph vs. VelocityDB

System Properties Comparison Alibaba Cloud PolarDB vs. KairosDB vs. Memgraph vs. VelocityDB

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Editorial information provided by DB-Engines
NameAlibaba Cloud PolarDB  Xexclude from comparisonKairosDB  Xexclude from comparisonMemgraph  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA cloud-native relational database compatible with MySQL, PostgreSQL, and Oracle. Designed for business critical applications.Distributed Time Series DBMS based on Cassandra or H2An open source graph database built for real-time streaming and compatible with Neo4jA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelRelational DBMSTime Series DBMSGraph DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.66
Rank#235  Overall
#108  Relational DBMS
Score0.67
Rank#233  Overall
#20  Time Series DBMS
Score3.19
Rank#94  Overall
#8  Graph DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitewww.alibabacloud.com/­product/­polardbgithub.com/­kairosdb/­kairosdbmemgraph.comvelocitydb.com
Technical documentationwww.alibabacloud.com/­help/­en/­polardb/­product-overviewkairosdb.github.iomemgraph.com/­docsvelocitydb.com/­UserGuide
Social network pagesLinkedInTwitterFacebookGitHubDiscord
DeveloperAlibabaMemgraph LtdVelocityDB Inc
Initial release201320172011
Current release1.2.2, November 20187.x
License infoCommercial or Open SourcecommercialOpen Source infoApache 2.0Open Source infoBSL 1.1; commercial license for enterprise edition availablecommercial
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC and C++C#
Server operating systemshostedLinux
OS X
Windows
LinuxAny that supports .NET
Data schemeyesschema-freeschema-free and schema-optionalyes
Typing infopredefined data types such as float or dateyesyesyesyes
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.yesnonono
Secondary indexesyesnoyes
SQL infoSupport of SQLyesnonono
APIs and other access methodsJDBC
ODBC
Graphite protocol
HTTP REST
Telnet API
Bolt protocol
Cypher query language
.Net
Supported programming languagesJava
Python
Java
JavaScript infoNode.js
PHP
Python
.Net
C
C++
Elixir
Go
Haskell
Java
JavaScript
PHP
Python
Ruby
Scala
.Net
Server-side scripts infoStored proceduresyesnono
TriggersyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infoImplicit feature of the cloud serviceSharding infobased on CassandraSharding infodynamic graph partitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infoImplicit feature of the cloud serviceselectable replication factor infobased on CassandraMulti-source replication using RAFT
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnoyes inforelationships in graphsno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACID infowith snapshot isolationACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyesyes infowith periodic snapshot and write-ahead logging (WAL) of changesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardsimple password-based access controlUsers, roles and permissionsBased on Windows Authentication
More information provided by the system vendor
Alibaba Cloud PolarDBKairosDBMemgraphVelocityDB
Specific characteristicsPolarDB, previously ApsaraDB for PolarDB, is a cloud-native relational database designed...
» more
Memgraph directly connects to your streaming infrastructure so you and your team...
» more
Competitive advantagesWebinar: Top Scientists Live: Tech Secrets to Double 11's Success Revealed. White...
» more
Business Source License ensures a future for the Memgraph community MAGE algorithm...
» more
Typical application scenariosCreating a Robust Cloud-Based Database for Fintech, E-Commerce and Gaming. Learn...
» more
Graph algorithms in bioinformatics Social network analysis Cryptocurrency network...
» more
Licensing and pricing modelsSpecification and pricing. You can use either of the following billing methods to...
» more
You can check out our pricing model and licenses on the company website .
» more

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More resources
Alibaba Cloud PolarDBKairosDBMemgraphVelocityDB
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