DBMS > Percona Server for MongoDB vs. Quasardb vs. VoltDB
System Properties Comparison Percona Server for MongoDB vs. Quasardb vs. VoltDB
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|Editorial information provided by DB-Engines|
|Name||Percona Server for MongoDB Xexclude from comparison||Quasardb Xexclude from comparison||VoltDB Xexclude from comparison|
|Description||A drop-in replacement for MongoDB Community Edition with enterprise-grade features.||Distributed, high-performance timeseries database||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||Document store||Time Series DBMS||Relational DBMS|
|Current release||3.4.10-2.10, November 2017||3.13.3, April 2022||11.3, April 2022|
|License Commercial or Open Source||Open Source GPL Version 2||commercial Free community edition, Non-profit organizations and non-commercial usage are eligible for free licenses||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||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C++||C++||Java, C++|
|Server operating systems||Linux||BSD|
OS X for development
|Typing predefined data types such as float or date||yes||yes integer and binary||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||no|
|Secondary indexes||yes||yes with tags||yes|
|SQL Support of SQL||no||SQL-like query language||yes only a subset of SQL 99|
|APIs and other access methods||proprietary protocol using JSON||HTTP API||Java API|
RESTful HTTP/JSON API
|Supported programming languages||Actionscript|
Erlang not officially supported
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding consistent hashing||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||Source-replica replication with selectable replication factor||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||with Hadoop integration||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency|
|Foreign keys Referential integrity||no||no||no FOREIGN KEY constraints are not supported|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||ACID Transactions are executed single-threaded within stored procedures|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes Data access is serialized by the server|
|Durability Support for making data persistent||yes||yes by using LevelDB||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 via In-Memory Engine||yes Transient mode|
|User concepts Access control||Access rights for users and roles||Cryptographically strong user authentication and audit trail||Users and roles with access to stored procedures|
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|Percona Server for MongoDB||Quasardb||VoltDB|
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