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DBMS > Dgraph vs. DolphinDB vs. Dolt vs. LevelDB vs. SpaceTime

System Properties Comparison Dgraph vs. DolphinDB vs. Dolt vs. LevelDB vs. SpaceTime

Editorial information provided by DB-Engines
NameDgraph  Xexclude from comparisonDolphinDB  Xexclude from comparisonDolt  Xexclude from comparisonLevelDB  Xexclude from comparisonSpaceTime  Xexclude from comparison
DescriptionDistributed and scalable native Graph DBMSDolphinDB is a high performance Time Series DBMS. It is integrated with an easy-to-use fully featured programming language and a high-volume high-velocity streaming analytics system. It offers operational simplicity, scalability, fault tolerance, and concurrency.A MySQL compatible DBMS with Git-like versioning of data and schemaEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesSpaceTime is a spatio-temporal DBMS with a focus on performance.
Primary database modelGraph DBMSTime Series DBMS
Vector DBMS
Relational DBMSKey-value storeSpatial DBMS
Secondary database modelsRelational DBMSDocument storeRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.39
Rank#155  Overall
#15  Graph DBMS
Score2.72
Rank#100  Overall
#8  Time Series DBMS
#5  Vector DBMS
Score0.93
Rank#194  Overall
#90  Relational DBMS
Score2.33
Rank#111  Overall
#19  Key-value stores
Score0.00
Rank#385  Overall
#7  Spatial DBMS
Websitedgraph.iowww.dolphindb.comgithub.com/­dolthub/­dolt
www.dolthub.com
github.com/­google/­leveldbwww.mireo.com/­spacetime
Technical documentationdgraph.io/­docsdocs.dolphindb.cn/­en/­help200/­index.htmldocs.dolthub.comgithub.com/­google/­leveldb/­blob/­main/­doc/­index.md
DeveloperDgraph Labs, Inc.DolphinDB, IncDoltHub IncGoogleMireo
Initial release20162018201820112020
Current releasev2.00.4, January 20221.23, February 2021
License infoCommercial or Open SourceOpen Source infoApache 2.0commercial infofree community version availableOpen Source infoApache Version 2.0Open Source infoBSDcommercial
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoC++GoC++C++
Server operating systemsLinux
OS X
Windows
Linux
Windows
Linux
macOS
Windows
Illumos
Linux
OS X
Windows
Linux
Data schemeschema-freeyesyesschema-freeyes
Typing infopredefined data types such as float or dateyesyesyesnoyes
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.nonononono
Secondary indexesyesyesyesnono
SQL infoSupport of SQLnoSQL-like query languageyesnoA subset of ANSI SQL is implemented
APIs and other access methodsGraphQL query language
gRPC (using protocol buffers) API
HTTP API
JDBC
JSON over HTTP
Kafka
MQTT (Message Queue Telemetry Transport)
ODBC
OPC DA
OPC UA
RabbitMQ
WebSocket
CLI Client
HTTP REST
RESTful HTTP API
Supported programming languagesC#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
C#
C++
Go
Java
JavaScript
MatLab
Python
R
Rust
Ada
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
C++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
C#
C++
Python
Server-side scripts infoStored proceduresnoyesyes infocurrently in alpha releasenono
Triggersnonoyesnono
Partitioning methods infoMethods for storing different data on different nodesyeshorizontal partitioningnonenoneFixed-grid hypercubes
Replication methods infoMethods for redundantly storing data on multiple nodesSynchronous replication via RaftyesA database can be cloned to multiple locations and be used there in isolation. Data/schema changes can be pushed/pulled explicitly between locations.noneReal-time block device replication (DRBD)
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyesACIDnono
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes infowith automatic compression on writesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlno infoPlanned for future releasesAdministrators, Users, GroupsOnly one user is configurable, and must be specified in the config file at startupnoyes

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More resources
DgraphDolphinDBDoltLevelDBSpaceTime
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