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DBMS > LMDB vs. Oracle Rdb

System Properties Comparison LMDB vs. Oracle Rdb

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Editorial information provided by DB-Engines
NameLMDB  Xexclude from comparisonOracle Rdb  Xexclude from comparison
DescriptionA high performant, light-weight, embedded key-value database library
Primary database modelKey-value storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.23
Rank#113  Overall
#22  Key-value stores
Score1.72
Rank#169  Overall
#79  Relational DBMS
Websitewww.symas.com/­symas-embedded-database-lmdbwww.oracle.com/­technetwork/­database/­database-technologies/­rdb/­overview/­index.html
DeveloperSymasOracle, originally developed by Digital Equipment Corporation (DEC)
Initial release20111984
Current release0.9.29, March 20217.4.1.1, 2021
License infoCommercial or Open SourceOpen Sourcecommercial
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC
Server operating systemsHP Open VMS
Data schemeschema-freeFlexible Schema (defined schema, partial schema, schema free)
Typing infopredefined data types such as float or dateyes
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
Secondary indexesnoyes
SQL infoSupport of SQLnoyes
Supported programming languagesC
Server-side scripts infoStored proceduresno
Triggersno
Partitioning methods infoMethods for storing different data on different nodesnone
Replication methods infoMethods for redundantly storing data on multiple nodesnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyes, on a single node
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlno

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LMDBOracle Rdb
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