DBMS > TerarkDB vs. VoltDB
System Properties Comparison TerarkDB vs. VoltDB
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|Editorial information provided by DB-Engines|
|Name||TerarkDB Xexclude from comparison||VoltDB Xexclude from comparison|
|Description||A key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDB||Distributed In-Memory NewSQL RDBMS Used for OLTP applications with a high frequency of relatively simple transactions, that can hold all their data in memory|
|Primary database model||Key-value store||Relational DBMS|
|Current release||11.3, April 2022|
|License Commercial or Open Source||commercial restricted open source version available||Open Source AGPL for Community Edition, commercial license for Enterprise, AWS, and Pro Editions|
|Cloud-based only Only available as a cloud service||no||no|
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|Implementation language||C++||Java, C++|
|Server operating systems||Linux|
OS X for development
|Typing predefined data types such as float or date||no||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|
|SQL Support of SQL||no||yes only a subset of SQL 99|
|APIs and other access methods||C++ API|
RESTful HTTP/JSON API
|Supported programming languages||C++|
Erlang not officially supported
|Server-side scripts Stored procedures||no||Java|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||none||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Foreign keys Referential integrity||no||no FOREIGN KEY constraints are not supported|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID Transactions are executed single-threaded within stored procedures|
|Concurrency Support for concurrent manipulation of data||yes||yes Data access is serialized by the server|
|Durability Support for making data persistent||yes||yes Snapshots and command logging|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes|
|User concepts Access control||no||Users and roles with access to stored procedures|
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