DBMS > Apache Doris vs. HarperDB vs. JSqlDb
System Properties Comparison Apache Doris vs. HarperDB vs. JSqlDb
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|Editorial information provided by DB-Engines|
|Name||Apache Doris Xexclude from comparison||HarperDB Xexclude from comparison||JSqlDb Xexclude from comparison|
|JSqlDB seems to be discontinued. Therefore it is excluded from the DB-Engines ranking.|
|Primary database model||Relational DBMS||Document store||Document store|
Object oriented DBMS
|Developer||Apache Software Foundation, originally contributed from Baidu||HarperDB||Konrad von Backstrom|
|Current release||1.2.2, February 2023||3.1, August 2021||0.8, December 2018|
|License Commercial or Open Source||Open Source Apache Version 2.0||commercial free community edition available||Open Source|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||Linux||Linux|
|Data scheme||yes||dynamic schema||schema-free|
|Typing predefined data types such as float or date||yes||yes JSON data types||no|
|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||no||no|
|SQL Support of SQL||yes||SQL-like data manipulation statements||no|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
|Supported programming languages||Java||.Net|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning||A table resides as a whole on one (or more) nodes in a cluster||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||yes the nodes on which a table resides can be defined||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||Atomic execution of specific operations|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes, using LMDB||yes using RocksDB|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Access rights for users and roles|
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