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DBMS > OpenQM vs. PostGIS vs. PouchDB vs. SQLite

System Properties Comparison OpenQM vs. PostGIS vs. PouchDB vs. SQLite

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Editorial information provided by DB-Engines
NameOpenQM infoalso called QM  Xexclude from comparisonPostGIS  Xexclude from comparisonPouchDB  Xexclude from comparisonSQLite  Xexclude from comparison
DescriptionQpenQM is a high-performance, self-tuning, multi-value DBMSSpatial extension of PostgreSQLJavaScript DBMS with an API inspired by CouchDBWidely used embeddable, in-process RDBMS
Primary database modelMultivalue DBMSSpatial DBMSDocument storeRelational DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.33
Rank#286  Overall
#10  Multivalue DBMS
Score23.90
Rank#29  Overall
#1  Spatial DBMS
Score2.35
Rank#116  Overall
#22  Document stores
Score116.01
Rank#10  Overall
#7  Relational DBMS
Websitewww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmpostgis.netpouchdb.comwww.sqlite.org
Technical documentationpostgis.net/­documentationpouchdb.com/­guideswww.sqlite.org/­docs.html
DeveloperRocket Software, originally Martin PhillipsApache Software FoundationDwayne Richard Hipp
Initial release1993200520122000
Current release3.4-123.4.2, February 20247.1.1, June 20193.45.3  (15 April 2024), April 2024
License infoCommercial or Open SourceOpen Source infoGPLv2, extended commercial license availableOpen Source infoGPL v2.0Open SourceOpen Source infoPublic Domain
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCJavaScriptC
Server operating systemsAIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
server-less, requires a JavaScript environment (browser, Node.js)server-less
Data schemeyes infowith some exceptionsyesschema-freeyes infodynamic column types
Typing infopredefined data types such as float or dateyesnoyes infonot rigid because of 'dynamic typing' concept.
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.yesyesnono
Secondary indexesyesyesyes infovia viewsyes
SQL infoSupport of SQLnoyesnoyes infoSQL-92 is not fully supported
APIs and other access methodsHTTP REST infoonly for PouchDB Server
JavaScript API
ADO.NET infoinofficial driver
JDBC infoinofficial driver
ODBC infoinofficial driver
Supported programming languages.Net
Basic
C
Java
Objective C
PHP
Python
JavaScriptActionscript
Ada
Basic
C
C#
C++
D
Delphi
Forth
Fortran
Haskell
Java
JavaScript
Lisp
Lua
MatLab
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
R
Ruby
Scala
Scheme
Smalltalk
Tcl
Server-side scripts infoStored proceduresyesuser defined functionsView functions in JavaScriptno
Triggersyesyesyesyes
Partitioning methods infoMethods for storing different data on different nodesyesyes infobased on PostgreSQLSharding infowith a proxy-based framework, named couchdb-loungenone
Replication methods infoMethods for redundantly storing data on multiple nodesyesyes infobased on PostgreSQLMulti-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
none
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynoyesnoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes infovia file-system locks
Durability infoSupport for making data persistentyesyesyes infoby using IndexedDB, WebSQL or LevelDB as backendyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlAccess rights can be defined down to the item levelyes infobased on PostgreSQLnono

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More resources
OpenQM infoalso called QMPostGISPouchDBSQLite
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