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DBMS > chDB vs. H2 vs. Oracle Coherence

System Properties Comparison chDB vs. H2 vs. Oracle Coherence

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Editorial information provided by DB-Engines
NamechDB  Xexclude from comparisonH2  Xexclude from comparisonOracle Coherence  Xexclude from comparison
DescriptionAn embedded SQL OLAP Engine powered by ClickHouseFull-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.Oracles in-memory data grid solution
Primary database modelRelational DBMSRelational DBMSKey-value store
Secondary database modelsTime Series DBMSSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.07
Rank#376  Overall
#158  Relational DBMS
Score8.33
Rank#46  Overall
#30  Relational DBMS
Score1.97
Rank#129  Overall
#22  Key-value stores
Websitegithub.com/­chdb-io/­chdbwww.h2database.comwww.oracle.com/­java/­coherence
Technical documentationdoc.chdb.iowww.h2database.com/­html/­main.htmldocs.oracle.com/­en/­middleware/­standalone/­coherence
DeveloperThomas MuellerOracle
Initial release202320052007
Current release2.2.220, July 202314.1, August 2023
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infodual-licence (Mozilla public license, Eclipse public license)commercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJava
Server operating systemsserver-lessAll OS with a Java VMAll OS with a Java VM
Data schemeyesschema-free
Typing infopredefined data types such as float or dateyesyes
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.nono
Secondary indexesyesno
SQL infoSupport of SQLClose to ANSI SQL (SQL/JSON + extensions)yesno
APIs and other access methodsJDBC
ODBC
JCache
JPA
RESTful HTTP API
Supported programming languagesBun
C
C++
Go
JavaScript (Node.js)
Python
Rust
Java.Net
C++
Java
Server-side scripts infoStored proceduresJava Stored Procedures and User-Defined Functionsno
Triggersyesyes infoLive Events
Partitioning methods infoMethods for storing different data on different nodesnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesWith clustering: 2 database servers on different computers operate on identical copies of a databaseyes, with selectable consistency level
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDconfigurable
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyes infooptionally
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardauthentification to access the cache via certificates or http basic authentication

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More resources
chDBH2Oracle Coherence
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