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DBMS > Quasardb

Quasardb System Properties

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Editorial information provided by DB-Engines
NameQuasardb
DescriptionDistributed, high-performance Key-value Store
Database modelKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.01
Rank#295  Overall
#48  Key-value stores
Websitewww.quasardb.net
Technical documentationdoc.quasardb.net
Developerquasardb
Initial release2009
Current release2.0.0, 2017
License infoCommercial or Open Sourcecommercial
Cloud-based infoOnly available as a cloud serviceno
Implementation languageC++
Server operating systemsBSD
Linux
OS X
Windows
Data schemeschema-free
Typing infopredefined data types such as float or dateyes infointeger and binary
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.no
Secondary indexesyes infowith tags
SQL infoSupport of (almost entire) SQL standard (DML, DDL and DCL statements)no
APIs and other access methodsHTTP API
Supported programming languages.Net
C
C#
C++
Java
JavaScript (Node.js)
PHP
Python
Server-side scripts infoStored proceduresno
Triggersno
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashing
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-slave replication
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integrityno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID
Concurrency infoSupport for concurrent manipulation of datayes
Durability infoSupport for making data persistentyes infoby using LevelDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTransient mode
User concepts infoAccess controlno

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