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DBMS > EDB Postgres vs. MaxDB vs. Realm vs. SQream DB

System Properties Comparison EDB Postgres vs. MaxDB vs. Realm vs. SQream DB

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Editorial information provided by DB-Engines
NameEDB Postgres  Xexclude from comparisonMaxDB infoformerly named Adabas-D  Xexclude from comparisonRealm  Xexclude from comparisonSQream DB  Xexclude from comparison
DescriptionThe EDB Postgres Platform is an enterprise-class data management platform based on the open source database PostgreSQL with flexible deployment options and Oracle compatibility features, complemented by tool kits for management, integration, and migration.A robust and reliable RDBMS optimized to run all major SAP solutionsA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Dataa GPU-based, columnar RDBMS for big data analytics workloads
Primary database modelRelational DBMSRelational DBMSDocument storeRelational DBMS
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.90
Rank#135  Overall
#63  Relational DBMS
Score2.32
Rank#112  Overall
#55  Relational DBMS
Score7.60
Rank#52  Overall
#9  Document stores
Score0.70
Rank#227  Overall
#104  Relational DBMS
Websitewww.enterprisedb.commaxdb.sap.comrealm.iosqream.com
Technical documentationwww.enterprisedb.com/­docsmaxdb.sap.com/­documentationrealm.io/­docsdocs.sqream.com
DeveloperEnterpriseDBSAP, acquired from Software AG (Adabas-D) in 1997Realm, acquired by MongoDB in May 2019SQream Technologies
Initial release2005198420142017
Current release14, December 20217.9.10.12, February 20242022.1.6, December 2022
License infoCommercial or Open Sourcecommercial infoBSD for PostgreSQL-componentscommercial infoLimited community edition freeOpen Sourcecommercial
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 languageCC++C++, CUDA, Haskell, Java, Scala
Server operating systemsLinux
Windows
AIX
HP-UX
Linux
Solaris
Windows
Android
Backend: server-less
iOS
Windows
Linux
Data schemeyesyesyesyes
Typing infopredefined data types such as float or dateyesyesyesyes, ANSI Standard SQL Types
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 infospecific XML-type available, but no XML query functionality.nono
Secondary indexesyesyesyesno
SQL infoSupport of SQLyes infostandard with numerous extensionsyesnoyes
APIs and other access methodsADO.NET
JDBC
native C library
ODBC
streaming API for large objects
ADO.NET
JDBC
ODBC
WebDAV
.Net
JDBC
ODBC
Supported programming languages.Net
C
C++
Delphi
Java
Perl
PHP
Python
Tcl
.Net
C#
Java
Perl
PHP
Python
.Net
Java infowith Android only
Objective-C
React Native
Swift
C++
Java
JavaScript (Node.js)
Python
Server-side scripts infoStored proceduresuser defined functions inforealized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.yesno inforuns within the applications so server-side scripts are unnecessaryuser defined functions in Python
Triggersyesyesyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning infoby hash, list or rangenonenonehorizontal and vertical partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replicationSource-replica replicationnonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yesyes
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.nonoyes infoIn-Memory realm
User concepts infoAccess controlfine grained access rights according to SQL-standardfine grained access rights according to SQL-standardyes

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More resources
EDB PostgresMaxDB infoformerly named Adabas-DRealmSQream DB
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