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DBMS > Datomic vs. OushuDB vs. searchxml

System Properties Comparison Datomic vs. OushuDB vs. searchxml

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Editorial information provided by DB-Engines
NameDatomic  Xexclude from comparisonOushuDB  Xexclude from comparisonsearchxml  Xexclude from comparison
DescriptionDatomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durabilityA data warehouse powered by Apache HAWQ supporting descriptive analysis and advanced machine learningDBMS for structured and unstructured content wrapped with an application server
Primary database modelRelational DBMSRelational DBMSNative XML DBMS
Search engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.55
Rank#144  Overall
#67  Relational DBMS
Score0.05
Rank#357  Overall
#151  Relational DBMS
Score0.00
Rank#385  Overall
#7  Native XML DBMS
#24  Search engines
Websitewww.datomic.comwww.oushu.com/­product/­oushuDBwww.searchxml.net/­category/­products
Technical documentationdocs.datomic.comwww.oushu.com/­documentationwww.searchxml.net/­support/­handouts
DeveloperCognitectOushuinformationpartners gmbh
Initial release20122015
Current release1.0.7180, July 20244.0.1, August 20201.0
License infoCommercial or Open Sourcecommercial infolimited edition freecommercialcommercial
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJava, ClojureC++
Server operating systemsAll OS with a Java VMLinuxWindows
Data schemeyesyesschema-free
Typing infopredefined data types such as float or dateyesyesyes
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.noyes
Secondary indexesyesyesyes
SQL infoSupport of SQLnoFull-featured ANSI SQL supportno
APIs and other access methodsRESTful HTTP APIJDBC
ODBC
RESTful HTTP API
WebDAV
XQuery
XSLT
Supported programming languagesClojure
Java
C
C++
C++ infomost other programming languages supported via APIs
Server-side scripts infoStored proceduresyes infoTransaction Functionsyesyes infoon the application server
TriggersBy using transaction functionsyesno
Partitioning methods infoMethods for storing different data on different nodesnone infoBut extensive use of caching in the application peersyesnone
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoBut extensive use of caching in the application peersyes infosychronisation to multiple collections
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoHadoop integrationno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDmultiple readers, single writer
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyes infousing external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)yesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes inforecommended only for testing and developmentno
User concepts infoAccess controlnoKerberos, SSL and role based accessDomain, group and role-based access control at the document level and for application services

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More resources
DatomicOushuDBsearchxml
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