DBMS > H2 vs. Hazelcast
System Properties Comparison H2 vs. Hazelcast
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|Editorial information provided by DB-Engines|
|Name||H2 Xexclude from comparison||Hazelcast Xexclude from comparison|
|Description||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||A widely adopted in-memory data grid|
|Primary database model||Relational DBMS||Key-value store|
|Secondary database models||Spatial DBMS||Document store JSON support with IMDG 3.12|
|Current release||2.1.210, January 2022||5.2.2, February 2023|
|License Commercial or Open Source||Open Source dual-licence (Mozilla public license, Eclipse public license)||Open Source Apache Version 2; commercial licenses available|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||All OS with a Java VM||All OS with a Java VM|
|Typing predefined data types such as float or date||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no||yes the object must implement a serialization strategy|
|SQL Support of SQL||yes||SQL-like query language|
|APIs and other access methods||JDBC|
RESTful HTTP API
|Supported programming languages||Java||.Net|
|Server-side scripts Stored procedures||Java Stored Procedures and User-Defined Functions||yes Event Listeners, Executor Services|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||With clustering: 2 database servers on different computers operate on identical copies of a database||yes Replicated Map|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency or Eventual Consistency selectable by user Raft Consensus Algorithm|
|Foreign keys Referential integrity||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||one or two-phase-commit; repeatable reads; read commited|
|Concurrency Support for concurrent manipulation of data||yes, multi-version concurrency control (MVCC)||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Role-based access control|
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