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DBMS > LevelDB vs. LMDB vs. OpenTSDB vs. Oracle Rdb

System Properties Comparison LevelDB vs. LMDB vs. OpenTSDB vs. Oracle Rdb

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonLMDB  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOracle Rdb  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesA high performant, light-weight, embedded key-value database libraryScalable Time Series DBMS based on HBase
Primary database modelKey-value storeKey-value storeTime Series DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.25
Rank#115  Overall
#19  Key-value stores
Score2.09
Rank#121  Overall
#20  Key-value stores
Score1.68
Rank#142  Overall
#12  Time Series DBMS
Score1.14
Rank#178  Overall
#80  Relational DBMS
Websitegithub.com/­google/­leveldbwww.symas.com/­symas-embedded-database-lmdbopentsdb.netwww.oracle.com/­database/­technologies/­related/­rdb.html
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdwww.lmdb.tech/­docopentsdb.net/­docs/­build/­html/­index.htmlwww.oracle.com/­database/­technologies/­related/­rdb-doc.html
DeveloperGoogleSymascurrently maintained by Yahoo and other contributorsOracle, originally developed by Digital Equipment Corporation (DEC)
Initial release2011201120111984
Current release1.23, February 20210.9.32, January 20247.4.1.1, 2021
License infoCommercial or Open SourceOpen Source infoBSDOpen SourceOpen Source infoLGPLcommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++CJava
Server operating systemsIllumos
Linux
OS X
Windows
Linux
Unix
Windows
Linux
Windows
HP Open VMS
Data schemeschema-freeschema-freeschema-freeFlexible Schema (defined schema, partial schema, schema free)
Typing infopredefined data types such as float or datenonumeric data for metrics, strings for tagsyes
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.nononono
Secondary indexesnononoyes
SQL infoSupport of SQLnononoyes
APIs and other access methodsHTTP API
Telnet API
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net
C
C++
Clojure
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Nim
Objective C
OCaml
Perl
PHP
Python
R
Ruby
Rust
Swift
Tcl
Erlang
Go
Java
Python
R
Ruby
Server-side scripts infoStored proceduresnonono
Triggersnonono
Partitioning methods infoMethods for storing different data on different nodesnonenoneSharding infobased on HBase
Replication methods infoMethods for redundantly storing data on multiple nodesnonenoneselectable replication factor infobased on HBase
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency infobased on HBaseImmediate Consistency
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoyes, on a single node
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnono
User concepts infoAccess controlnonono

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More resources
LevelDBLMDBOpenTSDBOracle Rdb
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