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DBMS > IBM Cloudant vs. Oracle Rdb vs. PostGIS vs. Postgres-XL

System Properties Comparison IBM Cloudant vs. Oracle Rdb vs. PostGIS vs. Postgres-XL

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Editorial information provided by DB-Engines
NameIBM Cloudant  Xexclude from comparisonOracle Rdb  Xexclude from comparisonPostGIS  Xexclude from comparisonPostgres-XL  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBSpatial extension of PostgreSQLBased on PostgreSQL enhanced with MPP and write-scale-out cluster features
Primary database modelDocument storeRelational DBMSSpatial DBMSRelational DBMS
Secondary database modelsRelational DBMSDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.68
Rank#106  Overall
#20  Document stores
Score1.08
Rank#184  Overall
#85  Relational DBMS
Score22.69
Rank#29  Overall
#1  Spatial DBMS
Score0.49
Rank#256  Overall
#117  Relational DBMS
Websitewww.ibm.com/­products/­cloudantwww.oracle.com/­database/­technologies/­related/­rdb.htmlpostgis.netwww.postgres-xl.org
Technical documentationcloud.ibm.com/­docs/­Cloudantwww.oracle.com/­database/­technologies/­related/­rdb-doc.htmlpostgis.net/­documentationwww.postgres-xl.org/­documentation
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Oracle, originally developed by Digital Equipment Corporation (DEC)
Initial release2010198420052014 infosince 2012, originally named StormDB
Current release7.4.1.1, 20213.4.2, February 202410 R1, October 2018
License infoCommercial or Open SourcecommercialcommercialOpen Source infoGPL v2.0Open Source infoMozilla public license
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangCC
Server operating systemshostedHP Open VMSLinux
macOS
Data schemeschema-freeFlexible Schema (defined schema, partial schema, schema free)yesyes
Typing infopredefined data types such as float or datenoyesyesyes
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.nonoyesyes infoXML type, but no XML query functionality
Secondary indexesyesyesyesyes
SQL infoSupport of SQLnoyesyesyes infodistributed, parallel query execution
APIs and other access methodsRESTful HTTP/JSON APIADO.NET
JDBC
native C library
ODBC
streaming API for large objects
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptuser defined functionsuser defined functions
Triggersyesyesyes
Partitioning methods infoMethods for storing different data on different nodesShardingyes infobased on PostgreSQLhorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
yes infobased on PostgreSQL
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesyesyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a document possibleyes, on a single nodeACIDACID infoMVCC
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyesyes
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.nononono
User concepts infoAccess controlAccess rights for users can be defined per databaseyes infobased on PostgreSQLfine grained access rights according to SQL-standard

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More resources
IBM CloudantOracle RdbPostGISPostgres-XL
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