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DBMS > Coveo vs. IBM Db2 warehouse vs. JanusGraph vs. TerminusDB vs. VelocityDB

System Properties Comparison Coveo vs. IBM Db2 warehouse vs. JanusGraph vs. TerminusDB vs. VelocityDB

Editorial information provided by DB-Engines
NameCoveo  Xexclude from comparisonIBM Db2 warehouse infoformerly named IBM dashDB  Xexclude from comparisonJanusGraph infosuccessor of Titan  Xexclude from comparisonTerminusDB infoformer name was DataChemist  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionAI-powered hosted search, recommendation and personalization platform providing tools for both low-code and full-code developmentCloud-based data warehousing serviceA Graph DBMS optimized for distributed clusters infoIt was forked from the latest code base of Titan in January 2017Scalable 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 modelSearch engineRelational DBMSGraph DBMSGraph DBMSGraph DBMS
Object oriented DBMS
Secondary database modelsDocument store
RDF store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.11
Rank#118  Overall
#11  Search engines
Score1.37
Rank#160  Overall
#74  Relational DBMS
Score2.02
Rank#125  Overall
#12  Graph DBMS
Score0.23
Rank#316  Overall
#27  Graph DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Websitewww.coveo.comwww.ibm.com/­products/­db2/­warehousejanusgraph.orgterminusdb.comvelocitydb.com
Technical documentationdocs.coveo.comdocs.janusgraph.orgterminusdb.github.io/­terminusdb/­#velocitydb.com/­UserGuide
DeveloperCoveoIBMLinux Foundation; originally developed as Titan by AureliusDataChemist Ltd.VelocityDB Inc
Initial release20122014201720182011
Current release0.6.3, February 202311.0.0, January 20237.x
License infoCommercial or Open SourcecommercialcommercialOpen Source infoApache 2.0Open Source infoGPL V3commercial
Cloud-based only infoOnly available as a cloud serviceyesyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaProlog, RustC#
Server operating systemshostedhostedLinux
OS X
Unix
Windows
LinuxAny that supports .NET
Data schemehybrid - fields need to be configured prior to indexing, but relationships can be exploited at query time without pre-configurationyesyesyesyes
Typing infopredefined data types such as float or dateyesyesyesyesyes
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 infoImport/export of XML data possiblenonono
Secondary indexesyesyesyesyes
SQL infoSupport of SQLnoyesnoSQL-like query language (WOQL)no
APIs and other access methodsRESTful HTTP API.NET Client API
JDBC
ODBC
OLE DB
Java API
TinkerPop Blueprints
TinkerPop Frames
TinkerPop Gremlin
TinkerPop Rexster
OWL
RESTful HTTP API
WOQL (Web Object Query Language)
.Net
Supported programming languagesC#
Java
JavaScript
Python
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Clojure
Java
Python
JavaScript
Python
.Net
Server-side scripts infoStored proceduresnoPL/SQL, SQL PLyesyesno
TriggersyesyesyesyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesyesShardingyes infodepending on the used storage backend (e.g. Cassandra, HBase, BerkeleyDB)Graph PartitioningSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesyesyesJournaling Streams
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes infovia Faunus, a graph analytics enginenono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesyesyes infoRelationships in graphsyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesACIDACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyes infoSupports various storage backends: Cassandra, HBase, Berkeley DB, Akiban, Hazelcastyes 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 controlgranular access controls, API key management, content filtersfine grained access rights according to SQL-standardUser authentification and security via Rexster Graph ServerRole-based access controlBased on Windows Authentication

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More resources
CoveoIBM Db2 warehouse infoformerly named IBM dashDBJanusGraph infosuccessor of TitanTerminusDB infoformer name was DataChemistVelocityDB
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