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DBMS > IBM Db2 warehouse vs. Memcached vs. OceanBase vs. TerminusDB vs. VelocityDB

System Properties Comparison IBM Db2 warehouse vs. Memcached vs. OceanBase vs. TerminusDB vs. VelocityDB

Editorial information provided by DB-Engines
NameIBM Db2 warehouse infoformerly named IBM dashDB  Xexclude from comparisonMemcached  Xexclude from comparisonOceanBase  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionCloud-based data warehousing serviceIn-memory key-value store, originally intended for cachingA distributed, high available RDBMS compatible with Oracle and MySQLScalable Graph Database platform making enterprise data available by exploiting inferred entities and relationshipsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelRelational DBMSKey-value storeRelational DBMSGraph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store
Wide column store
Document store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.37
Rank#160  Overall
#74  Relational DBMS
Score18.08
Rank#32  Overall
#4  Key-value stores
Score1.57
Rank#149  Overall
#69  Relational DBMS
Score0.23
Rank#316  Overall
#27  Graph DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitewww.ibm.com/­products/­db2/­warehousewww.memcached.orgen.oceanbase.comterminusdb.comvelocitydb.com
Technical documentationgithub.com/­memcached/­memcached/­wikien.oceanbase.com/­docs/­oceanbase-databaseterminusdb.github.io/­terminusdb/­#velocitydb.com/­UserGuide
DeveloperIBMDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalOceanBase infopreviously Alibaba and Ant GroupDataChemist Ltd.VelocityDB Inc
Initial release20142003201020182011
Current release1.6.27, May 20244.3.0, April 202411.0.0, January 20237.x
License infoCommercial or Open SourcecommercialOpen Source infoBSD licenseOpen Source infoCommercial license availableOpen Source infoGPL V3commercial
Cloud-based only infoOnly available as a cloud serviceyesnononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageCC++Prolog, RustC#
Server operating systemshostedFreeBSD
Linux
OS X
Unix
Windows
LinuxLinuxAny that supports .NET
Data schemeyesschema-freeyesyesyes
Typing infopredefined data types such as float or dateyesnoyesyesyes
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.no infoImport/export of XML data possibleyesnono
Secondary indexesyesnoyesyes
SQL infoSupport of SQLyesnoyesSQL-like query language (WOQL)no
APIs and other access methods.NET Client API
JDBC
ODBC
OLE DB
Proprietary protocolJDBC
ODBC
ODP.NET
Oracle Call Interface (OCI)
Proprietary native API
Table API
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languagesJava
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Ada infoin MySQL-compatible model
C infoin Oracle- and MySQL- compatible models
C++ infoin Oracle- and MySQL- compatible models
D infoin MySQL-compatible model
Delphi infoin MySQL-compatible model
Eiffel infoin MySQL-compatible model
Erlang infoin MySQL-compatible model
Haskell infoin MySQL-compatible model
Java infoin Oracle- and MySQL- compatible models
JavaScript (Node.js) infoin MySQL-compatible model
Objective-C infoin MySQL-compatible model
OCaml infoin MySQL-compatible model
Perl infoin MySQL-compatible model
PHP infoin MySQL-compatible model
Python infoin MySQL-compatible model
Ruby infoin MySQL-compatible model
Scheme infoin MySQL-compatible model
Tcl infoin MySQL-compatible model
JavaScript
Python
.Net
Server-side scripts infoStored proceduresPL/SQL, SQL PLnoPL/SQL in oracle-compatible mode, MySQL Stored Procedure in mysql-compatible modeyesno
TriggersyesnoyesyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesShardingnonehorizontal partitioning (by hash, key, range, range columns, list, and list columns)Graph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesnone infoRepcached, a Memcached patch, provides this functionallityMulti-source replication using PaxosJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesnoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesnoyesyes infoin-memory journalingyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlfine grained access rights according to SQL-standardyes infousing SASL (Simple Authentication and Security Layer) protocolAccess rights for users, groups and roles according to SQL-standardRole-based access controlBased on Windows Authentication

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More resources
IBM Db2 warehouse infoformerly named IBM dashDBMemcachedOceanBaseTerminusDB infoformer name was DataChemistVelocityDB
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