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DBMS > LevelDB vs. OrigoDB vs. Postgres-XL vs. XTDB

System Properties Comparison LevelDB vs. OrigoDB vs. Postgres-XL vs. XTDB

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonOrigoDB  Xexclude from comparisonPostgres-XL  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesA fully ACID in-memory object graph databaseBased on PostgreSQL enhanced with MPP and write-scale-out cluster featuresA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelKey-value storeDocument store
Object oriented DBMS
Relational DBMSDocument store
Secondary database modelsDocument store
Spatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.03
Rank#101  Overall
#19  Key-value stores
Score0.00
Rank#356  Overall
#47  Document stores
#19  Object oriented DBMS
Score0.67
Rank#211  Overall
#101  Relational DBMS
Score0.00
Rank#356  Overall
#47  Document stores
Websitegithub.com/­google/­leveldborigodb.comwww.postgres-xl.orggithub.com/­xtdb/­xtdb
xtdb.com
Technical documentationgithub.com/­google/­leveldb/­blob/­master/­doc/­index.mdorigodb.com/­docswww.postgres-xl.org/­documentationxtdb.com/­docs
DeveloperGoogleRobert Friberg et alJuxt Ltd.
Initial release20112009 infounder the name LiveDB2014 infosince 2012, originally named StormDB2019
Current release1.23, February 202110 R1, October 20181.19, September 2021
License infoCommercial or Open SourceOpen Source infoBSDOpen SourceOpen Source infoMozilla public licenseOpen Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C#CClojure
Server operating systemsIllumos
Linux
OS X
Windows
Linux
Windows
Linux
macOS
All OS with a Java 8 (and higher) VM
Linux
Data schemeschema-freeyesyesschema-free
Typing infopredefined data types such as float or datenoUser defined using .NET types and collectionsyesyes, extensible-data-notation format
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.nono infocan be achieved using .NETyes infoXML type, but no XML query functionalityno
Secondary indexesnoyesyesyes
SQL infoSupport of SQLnonoyes infodistributed, parallel query executionlimited SQL, making use of Apache Calcite
APIs and other access methods.NET Client API
HTTP API
LINQ
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
HTTP REST
JDBC
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Clojure
Java
Server-side scripts infoStored proceduresnoyesuser defined functionsno
Triggersnoyes infoDomain Eventsyesno
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioning infoclient side managed; servers are not synchronizedhorizontal partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneSource-replica replicationyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynodepending on modelyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACID infoMVCCACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyes infoWrite ahead logyesyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlnoRole based authorizationfine grained access rights according to SQL-standard

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More resources
LevelDBOrigoDBPostgres-XLXTDB infoformerly named Crux
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