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DBMS > OpenMLDB vs. Postgres-XL vs. Splunk vs. Weaviate

System Properties Comparison OpenMLDB vs. Postgres-XL vs. Splunk vs. Weaviate

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Editorial information provided by DB-Engines
NameOpenMLDB  Xexclude from comparisonPostgres-XL  Xexclude from comparisonSplunk  Xexclude from comparisonWeaviate  Xexclude from comparison
DescriptionAn open-source machine learning database that provides a feature platform for training and inferenceBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresAnalytics Platform for Big DataAn AI-native realtime vector database engine that integrates scalable machine learning models.
Primary database modelTime Series DBMSRelational DBMSSearch engineVector DBMS
Secondary database modelsRelational DBMSDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.11
Rank#339  Overall
#30  Time Series DBMS
Score0.43
Rank#260  Overall
#119  Relational DBMS
Score93.02
Rank#13  Overall
#2  Search engines
Score1.48
Rank#149  Overall
#8  Vector DBMS
Websiteopenmldb.aiwww.postgres-xl.orgwww.splunk.comgithub.com/­weaviate/­weaviate
weaviate.io
Technical documentationopenmldb.ai/­docs/­zh/­mainwww.postgres-xl.org/­documentationdocs.splunk.com/­Documentation/­Splunkweaviate.io/­developers/­weaviate
Developer4 Paradigm Inc.Splunk Inc.Weaviate B.V.
Initial release20202014 infosince 2012, originally named StormDB20032019
Current release2024-2 February 202410 R1, October 20181.19, May 2023
License infoCommercial or Open SourceOpen SourceOpen Source infoMozilla public licensecommercial infoLimited free edition and free developer edition availableOpen Source infocommercial license available with Weaviate Enterprise
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 languageC++, Java, ScalaCGo
Server operating systemsLinuxLinux
macOS
Linux
OS X
Solaris
Windows
Data schemeFixed schemayesyesyes, maps to GraphQL interface
Typing infopredefined data types such as float or dateyesyesyesyes infostring, int, float, geo point, date, cross reference, fuzzy references
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.noyes infoXML type, but no XML query functionalityyesno
Secondary indexesyesyesyesyes infoall data objects are indexed in a semantic vector space (the Contextionary), all primitive fields are indexed
SQL infoSupport of SQLyesyes infodistributed, parallel query executionno infoSplunk Search Processing Language for search commandsGraphQL is used as query language
APIs and other access methodsJDBC
SQLAlchemy
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
HTTP RESTGraphQL query language
RESTful HTTP/JSON API
Supported programming languagesC++
Go
Java
Python
Scala
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C#
Java
JavaScript
PHP
Python
Ruby
JavaScript / TypeScript
Python
Server-side scripts infoStored proceduresnouser defined functionsyesno
Triggersnoyesyesno
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioninghorizontal partitioningShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replicationMulti-source replicationyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual ConsistencyEventual Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID infoMVCCno infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searchingno
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.yesnonoyes
User concepts infoAccess controlfine grained access rights according to SQL-standardfine grained access rights according to SQL-standardAccess rights for users and rolesAPI Keys
OpenID Connect Discovery
More information provided by the system vendor
OpenMLDBPostgres-XLSplunkWeaviate
Specific characteristicsWeaviate is an open source vector database that is robust, scalable, cloud-native,...
» more
Competitive advantagesFlexible deployment - Free, open source or fully-managed cloud vector database service...
» more
Typical application scenariosAs a database supporting the development of generative AI and semantic search applications...
» more
Key customersAll companies that have data. ​
» more
Market metricsAs of mid 2023: Over 2 million open source downloads 3500+ Weaviate Slack community...
» more
Licensing and pricing modelsWeaviate is open-source, and free to use. Weaviate is also available as a fully managed...
» more

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More resources
OpenMLDBPostgres-XLSplunkWeaviate
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