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DBMS > DataFS vs. H2 vs. IBM Db2 vs. Oracle Rdb vs. Quasardb

System Properties Comparison DataFS vs. H2 vs. IBM Db2 vs. Oracle Rdb vs. Quasardb

Editorial information provided by DB-Engines
NameDataFS  Xexclude from comparisonH2  Xexclude from comparisonIBM Db2 infoformerly named DB2 or IBM Database 2  Xexclude from comparisonOracle Rdb  Xexclude from comparisonQuasardb  Xexclude from comparison
DescriptionAll data is stored inside objects which are linked by so-called link attributes. Objects consist of classes which can be extended and de-extended at runtime. Graphs can be defined with a struct.Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.Common in IBM host environments, 2 different versions for host and Windows/LinuxDistributed, high-performance timeseries database
Primary database modelObject oriented DBMSRelational DBMSRelational DBMS infoSince Version 10.5 support for JSON/BSON documents compatible with MongoDBRelational DBMSTime Series DBMS
Secondary database modelsGraph DBMSSpatial DBMSDocument store
RDF store infoin Db2 LUW (Linux, Unix, Windows)
Spatial DBMS infowith Db2 Spatial Extender
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#354  Overall
#15  Object oriented DBMS
Score8.13
Rank#49  Overall
#31  Relational DBMS
Score128.46
Rank#8  Overall
#5  Relational DBMS
Score1.08
Rank#184  Overall
#85  Relational DBMS
Score0.14
Rank#332  Overall
#29  Time Series DBMS
Websitenewdatabase.comwww.h2database.comwww.ibm.com/­products/­db2www.oracle.com/­database/­technologies/­related/­rdb.htmlquasar.ai
Technical documentationdev.mobiland.com/­Overview.xspwww.h2database.com/­html/­main.htmlwww.ibm.com/­docs/­en/­db2www.oracle.com/­database/­technologies/­related/­rdb-doc.htmldoc.quasar.ai/­master
DeveloperMobiland AGThomas MuellerIBMOracle, originally developed by Digital Equipment Corporation (DEC)quasardb
Initial release201820051983 infohost version19842009
Current release1.1.263, October 20222.2.220, July 202312.1, October 20167.4.1.1, 20213.14.1, January 2024
License infoCommercial or Open SourcecommercialOpen Source infodual-licence (Mozilla public license, Eclipse public license)commercial infofree version is availablecommercialcommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licenses
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC and C++C++
Server operating systemsWindowsAll OS with a Java VMAIX
HP-UX
Linux
Solaris
Windows
z/OS
HP Open VMSBSD
Linux
OS X
Windows
Data schemeClasses, Structs, and Lists are written in proprietary DataTypeDefinitionLanguage (.dtdl) and Objects consisting of those are written in proprietary DataAccessDefinitionLanguage (.dadl)yesyesFlexible Schema (defined schema, partial schema, schema free)schema-free
Typing infopredefined data types such as float or dateyesyesyesyesyes infointeger and binary
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.nononono
Secondary indexesnoyesyesyesyes infowith tags
SQL infoSupport of SQLnoyesyesyesSQL-like query language
APIs and other access methods.NET Client API
Proprietary client DLL
WinRT client
JDBC
ODBC
ADO.NET
JDBC
JSON style queries infoMongoDB compatible
ODBC
XQuery
HTTP API
Supported programming languages.Net
C
C#
C++
VB.Net
JavaC
C#
C++
Cobol
Delphi
Fortran
Java
Perl
PHP
Python
Ruby
Visual Basic
.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
Server-side scripts infoStored proceduresJava Stored Procedures and User-Defined Functionsyesno
Triggersno, except callback-events from server when changes happenedyesyesno
Partitioning methods infoMethods for storing different data on different nodesProprietary Sharding systemnoneSharding infoonly with Windows/Unix/Linux VersionSharding infoconsistent hashing
Replication methods infoMethods for redundantly storing data on multiple nodesWith clustering: 2 database servers on different computers operate on identical copies of a databaseyes infowith separate tools (MQ, InfoSphere)Source-replica replication with selectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononowith Hadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDACIDyes, on a single nodeACID
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes infoby using LevelDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesnoyes infoTransient mode
User concepts infoAccess controlWindows-Profilefine grained access rights according to SQL-standardfine grained access rights according to SQL-standardCryptographically strong user authentication and audit trail

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More resources
DataFSH2IBM Db2 infoformerly named DB2 or IBM Database 2Oracle RdbQuasardb
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