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DBMS > Postgres-XL vs. PouchDB vs. Quasardb vs. SAP IQ vs. YottaDB

System Properties Comparison Postgres-XL vs. PouchDB vs. Quasardb vs. SAP IQ vs. YottaDB

Editorial information provided by DB-Engines
NamePostgres-XL  Xexclude from comparisonPouchDB  Xexclude from comparisonQuasardb  Xexclude from comparisonSAP IQ infoformer name: Sybase IQ  Xexclude from comparisonYottaDB  Xexclude from comparison
DescriptionBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresJavaScript DBMS with an API inspired by CouchDBDistributed, high-performance timeseries databaseColumnar RDBMS optimized for Big Data analyticsA fast and solid embedded Key-value store
Primary database modelRelational DBMSDocument storeTime Series DBMSRelational DBMS infocolumn-orientedKey-value store
Secondary database modelsDocument store
Spatial DBMS
Relational DBMS infousing the Octo plugin
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.49
Rank#256  Overall
#117  Relational DBMS
Score2.28
Rank#115  Overall
#21  Document stores
Score0.14
Rank#332  Overall
#29  Time Series DBMS
Score2.75
Rank#104  Overall
#53  Relational DBMS
Score0.20
Rank#317  Overall
#47  Key-value stores
Websitewww.postgres-xl.orgpouchdb.comquasar.aiwww.sap.com/­products/­technology-platform/­sybase-iq-big-data-management.htmlyottadb.com
Technical documentationwww.postgres-xl.org/­documentationpouchdb.com/­guidesdoc.quasar.ai/­masterhelp.sap.com/­docs/­SAP_IQyottadb.com/­resources/­documentation
DeveloperApache Software FoundationquasardbSAP, formerly SybaseYottaDB, LLC
Initial release2014 infosince 2012, originally named StormDB2012200919942001
Current release10 R1, October 20187.1.1, June 20193.14.1, January 202416.1 SPS04, April 2019
License infoCommercial or Open SourceOpen Source infoMozilla public licenseOpen Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensescommercialOpen Source infoAGPL 3.0
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJavaScriptC++C
Server operating systemsLinux
macOS
server-less, requires a JavaScript environment (browser, Node.js)BSD
Linux
OS X
Windows
AIX
HP-UX
Linux
Solaris
Windows
Docker
Linux
Data schemeyesschema-freeschema-freeyesschema-free
Typing infopredefined data types such as float or dateyesnoyes infointeger and binaryyesno
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.yes infoXML type, but no XML query functionalitynononono
Secondary indexesyesyes infovia viewsyes infowith tagsyesno
SQL infoSupport of SQLyes infodistributed, parallel query executionnoSQL-like query languageyesby using the Octo plugin
APIs and other access methodsADO.NET
JDBC
native C library
ODBC
streaming API for large objects
HTTP REST infoonly for PouchDB Server
JavaScript API
HTTP APIADO.NET
JDBC
ODBC
RESTful HTTP API
PostgreSQL wire protocol infousing the Octo plugin
Proprietary protocol
Supported programming languages.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
JavaScript.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
C
C#
C++
Java
Perl
PHP
Python
Ruby
C
Go
JavaScript (Node.js)
Lua
M
Perl
Python
Rust
Server-side scripts infoStored proceduresuser defined functionsView functions in JavaScriptnoyes
Triggersyesyesnoyes
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioningSharding infowith a proxy-based framework, named couchdb-loungeSharding infoconsistent hashingshared disk or shared nothing architectures with SAP IQ Multiplexer
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
Source-replica replication with selectable replication factorSAP/Sybase Replication Serveryes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyeswith Hadoop integrationHadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID infoMVCCnoACIDACIDoptimistic locking
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyes infoby using IndexedDB, WebSQL or LevelDB as backendyes infoby using LevelDByesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes infoTransient modenoyes
User concepts infoAccess controlfine grained access rights according to SQL-standardnoCryptographically strong user authentication and audit trailfine grained access rights according to SQL-standardUsers and groups based on OS-security mechanisms

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More resources
Postgres-XLPouchDBQuasardbSAP IQ infoformer name: Sybase IQYottaDB
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