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DBMS > H2GIS vs. IBM Db2 Event Store vs. Impala vs. Realm

System Properties Comparison H2GIS vs. IBM Db2 Event Store vs. Impala vs. Realm

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Editorial information provided by DB-Engines
NameH2GIS  Xexclude from comparisonIBM Db2 Event Store  Xexclude from comparisonImpala  Xexclude from comparisonRealm  Xexclude from comparison
DescriptionSpatial extension of H2Distributed Event Store optimized for Internet of Things use casesAnalytic DBMS for HadoopA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Data
Primary database modelSpatial DBMSEvent Store
Time Series DBMS
Relational DBMSDocument store
Secondary database modelsRelational DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.03
Rank#335  Overall
#4  Spatial DBMS
Score0.49
Rank#242  Overall
#2  Event Stores
#19  Time Series DBMS
Score18.03
Rank#40  Overall
#25  Relational DBMS
Score9.89
Rank#49  Overall
#8  Document stores
Websitewww.h2gis.orgwww.ibm.com/­products/­db2-event-storewww.cloudera.com/­products/­open-source/­apache-hadoop/­impala.htmlrealm.io
Technical documentationwww.h2gis.org/­docs/­homewww.ibm.com/­support/­knowledgecenter/­en/­SSGNPV_2.0.0/­welcome.htmldocs.cloudera.com/­documentation/­enterprise/­latest/­topics/­impala.htmlrealm.io/­docs
DeveloperCNRSIBMClouderaRealm, acquired by MongoDB in May 2019
Initial release2013201720132014
Current release2.04.0.0, July 2021
License infoCommercial or Open SourceOpen Source infoLGPL 3.0commercial infofree developer edition availableOpen Source infoApache Version 2Open Source
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 languageJavaC and C++C++
Server operating systemsLinux infoLinux, macOS, Windows for the developer additionLinuxAndroid
Backend: server-less
iOS
Windows
Data schemeyesyesyesyes
Typing infopredefined data types such as float or dateyesyesyesyes
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.nononono
Secondary indexesyesnoyesyes
SQL infoSupport of SQLyesyes infothrough the embedded Spark runtimeSQL-like DML and DDL statementsno
APIs and other access methodsADO.NET
DB2 Connect
JDBC
ODBC
RESTful HTTP API
JDBC
ODBC
Supported programming languagesJavaC
C#
C++
Cobol
Delphi
Fortran
Go
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Scala
Visual Basic
All languages supporting JDBC/ODBC.Net
Java infowith Android only
Objective-C
React Native
Swift
Server-side scripts infoStored proceduresyes infobased on H2yesyes infouser defined functions and integration of map-reduceno inforuns within the applications so server-side scripts are unnecessary
Triggersyesnonoyes infoChange Listeners
Partitioning methods infoMethods for storing different data on different nodesnoneShardingShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infobased on H2Active-active shard replicationselectable replication factornone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes infoquery execution via MapReduceno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnonoACID
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)No - written data is immutableyes
Durability infoSupport for making data persistentyesYes - Synchronous writes to local disk combined with replication and asynchronous writes in parquet format to permanent shared storageyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesnoyes infoIn-Memory realm
User concepts infoAccess controlyes infobased on H2fine grained access rights according to SQL-standardAccess rights for users, groups and roles infobased on Apache Sentry and Kerberosyes
More information provided by the system vendor
H2GISIBM Db2 Event StoreImpalaRealm
Specific characteristicsNow a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Competitive advantagesRealm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Typical application scenariosMobile Consumer Apps First-Line Worker Apps
» more
Key customersCathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Market metricsUsed by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
» more
Licensing and pricing modelsRealm database is licensed under the Apache License v2.0.
» more

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More resources
H2GISIBM Db2 Event StoreImpalaRealm
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