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DBMS > LevelDB vs. VoltDB

System Properties Comparison LevelDB vs. VoltDB

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonVoltDB  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesDistributed In-Memory NewSQL RDBMS infoUsed for OLTP applications with a high frequency of relatively simple transactions, that can hold all their data in memory
Primary database modelKey-value storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.13
Rank#95  Overall
#18  Key-value stores
Score1.93
Rank#125  Overall
#62  Relational DBMS
Websitegithub.com/­google/­leveldbwww.voltdb.com
Technical documentationgithub.com/­google/­leveldb/­blob/­master/­doc/­index.mddocs.voltdb.com
DeveloperGoogleVoltDB Inc.
Initial release20112010
Current release1.22, May 20199.0, April 2019
License infoCommercial or Open SourceOpen Source infoBSDOpen Source infoAGPL for Community Edition, commercial license for Enterprise, AWS, and Pro Editions
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++Java, C++
Server operating systemsIllumos
Linux
OS X
Windows
Linux
OS X infofor development
Data schemeschema-freeyes
Typing infopredefined data types such as float or datenoyes
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 indexesnoyes
SQL infoSupport of SQLnoyes infoonly a subset of SQL 99
APIs and other access methodsJava API
JDBC
RESTful HTTP/JSON API
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
C#
C++
Erlang infonot officially supported
Go
Java
JavaScript infoNode.js
PHP
Python
Server-side scripts infoStored proceduresnoJava
Triggersnono
Partitioning methods infoMethods for storing different data on different nodesnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneMulti-source replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integritynono infoFOREIGN KEY constraints are not supported
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID infoTransactions are executed single-threaded within stored procedures
Concurrency infoSupport for concurrent manipulation of datayesyes infoData access is serialized by the server
Durability infoSupport for making data persistentyes infowith automatic compression on writesyes infoSnapshots and command logging
User concepts infoAccess controlnoUsers and roles with access to stored procedures

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