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DBMS > LevelDB vs. Oracle Coherence vs. PostGIS

System Properties Comparison LevelDB vs. Oracle Coherence vs. PostGIS

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonPostGIS  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesOracles in-memory data grid solutionSpatial extension of PostgreSQL
Primary database modelKey-value storeKey-value storeSpatial DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.33
Rank#111  Overall
#19  Key-value stores
Score1.90
Rank#127  Overall
#21  Key-value stores
Score20.16
Rank#29  Overall
#1  Spatial DBMS
Websitegithub.com/­google/­leveldbwww.oracle.com/­java/­coherencepostgis.net
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mddocs.oracle.com/­en/­middleware/­standalone/­coherencepostgis.net/­documentation
DeveloperGoogleOracle
Initial release201120072005
Current release1.23, February 202114.1, August 20233.4.2, February 2024
License infoCommercial or Open SourceOpen Source infoBSDcommercialOpen Source infoGPL v2.0
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++JavaC
Server operating systemsIllumos
Linux
OS X
Windows
All OS with a Java VM
Data schemeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenoyesyes
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.nonoyes
Secondary indexesnonoyes
SQL infoSupport of SQLnonoyes
APIs and other access methodsJCache
JPA
RESTful HTTP API
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net
C++
Java
Server-side scripts infoStored proceduresnonouser defined functions
Triggersnoyes infoLive Eventsyes
Partitioning methods infoMethods for storing different data on different nodesnoneShardingyes infobased on PostgreSQL
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes, with selectable consistency levelyes infobased on PostgreSQL
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynonoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlnoauthentification to access the cache via certificates or http basic authenticationyes infobased on PostgreSQL

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More resources
LevelDBOracle CoherencePostGIS
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