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DBMS > EXASOL vs. H2GIS vs. PouchDB

System Properties Comparison EXASOL vs. H2GIS vs. PouchDB

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Editorial information provided by DB-Engines
NameEXASOL  Xexclude from comparisonH2GIS  Xexclude from comparisonPouchDB  Xexclude from comparison
DescriptionHigh-performance, in-memory, MPP database specifically designed for in-memory analytics.Spatial extension of H2JavaScript DBMS with an API inspired by CouchDB
Primary database modelRelational DBMSSpatial DBMSDocument store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.25
Rank#120  Overall
#57  Relational DBMS
Score0.05
Rank#372  Overall
#7  Spatial DBMS
Score2.35
Rank#116  Overall
#22  Document stores
Websitewww.exasol.comwww.h2gis.orgpouchdb.com
Technical documentationwww.exasol.com/­resourceswww.h2gis.org/­docs/­homepouchdb.com/­guides
DeveloperExasolCNRSApache Software Foundation
Initial release200020132012
Current release7.1.1, June 2019
License infoCommercial or Open SourcecommercialOpen Source infoLGPL 3.0Open Source
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaJavaScript
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)
Data schemeyesyesschema-free
Typing infopredefined data types such as float or dateyesyesno
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.nonono
Secondary indexesyesyesyes infovia views
SQL infoSupport of SQLyesyesno
APIs and other access methods.Net
JDBC
ODBC
WebSocket
HTTP REST infoonly for PouchDB Server
JavaScript API
Supported programming languagesJava
Lua
Python
R
JavaJavaScript
Server-side scripts infoStored proceduresuser defined functionsyes infobased on H2View functions in JavaScript
Triggersyesyesyes
Partitioning methods infoMethods for storing different data on different nodesShardingnoneSharding infowith a proxy-based framework, named couchdb-lounge
Replication methods infoMethods for redundantly storing data on multiple nodesyes infobased on H2Multi-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
MapReduce infoOffers an API for user-defined Map/Reduce methodsyes infoHadoop integrationnoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integrityyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDno
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)
Durability infoSupport for making data persistentyesyesyes infoby using IndexedDB, WebSQL or LevelDB as backend
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes
User concepts infoAccess controlAccess rights for users, groups and roles according to SQL-standardyes infobased on H2no

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More resources
EXASOLH2GISPouchDB
DB-Engines blog posts

New kids on the block: database management systems implemented in JavaScript
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