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DBMS > Apache Impala vs. H2GIS vs. Memcached vs. RDFox

System Properties Comparison Apache Impala vs. H2GIS vs. Memcached vs. RDFox

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Editorial information provided by DB-Engines
NameApache Impala  Xexclude from comparisonH2GIS  Xexclude from comparisonMemcached  Xexclude from comparisonRDFox  Xexclude from comparison
DescriptionAnalytic DBMS for HadoopSpatial extension of H2In-memory key-value store, originally intended for cachingHigh performance knowledge graph and semantic reasoning engine
Primary database modelRelational DBMSSpatial DBMSKey-value storeGraph DBMS
RDF store
Secondary database modelsDocument storeRelational DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score14.03
Rank#40  Overall
#24  Relational DBMS
Score0.05
Rank#372  Overall
#7  Spatial DBMS
Score20.74
Rank#32  Overall
#4  Key-value stores
Score0.24
Rank#309  Overall
#25  Graph DBMS
#14  RDF stores
Websiteimpala.apache.orgwww.h2gis.orgwww.memcached.orgwww.oxfordsemantic.tech
Technical documentationimpala.apache.org/­impala-docs.htmlwww.h2gis.org/­docs/­homegithub.com/­memcached/­memcached/­wikidocs.oxfordsemantic.tech
DeveloperApache Software Foundation infoApache top-level project, originally developed by ClouderaCNRSDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalOxford Semantic Technologies
Initial release2013201320032017
Current release4.1.0, June 20221.6.25, March 20246.0, Septermber 2022
License infoCommercial or Open SourceOpen Source infoApache Version 2Open Source infoLGPL 3.0Open Source infoBSD licensecommercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++JavaCC++
Server operating systemsLinuxFreeBSD
Linux
OS X
Unix
Windows
Linux
macOS
Windows
Data schemeyesyesschema-freeyes infoRDF schemas
Typing infopredefined data types such as float or dateyesyesnoyes
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 indexesyesyesno
SQL infoSupport of SQLSQL-like DML and DDL statementsyesnono
APIs and other access methodsJDBC
ODBC
Proprietary protocolRESTful HTTP API
SPARQL 1.1
Supported programming languagesAll languages supporting JDBC/ODBCJava.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
C
Java
Server-side scripts infoStored proceduresyes infouser defined functions and integration of map-reduceyes infobased on H2no
Triggersnoyesno
Partitioning methods infoMethods for storing different data on different nodesShardingnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factoryes infobased on H2none infoRepcached, a Memcached patch, provides this functionallityreplication via a shared file system
MapReduce infoOffers an API for user-defined Map/Reduce methodsyes infoquery execution via MapReducenono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyImmediate Consistency in stand-alone mode, Eventual Consistency in replicated setups
Foreign keys infoReferential integritynoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoACID
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yes
Durability infoSupport for making data persistentyesyesnoyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlAccess rights for users, groups and roles infobased on Apache Sentry and Kerberosyes infobased on H2yes infousing SASL (Simple Authentication and Security Layer) protocolRoles, resources, and access types

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Apache ImpalaH2GISMemcachedRDFox
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