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DBMS > 4D vs. Alibaba Cloud AnalyticDB for PostgreSQL vs. DolphinDB vs. EJDB

System Properties Comparison 4D vs. Alibaba Cloud AnalyticDB for PostgreSQL vs. DolphinDB vs. EJDB

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Editorial information provided by DB-Engines
Name4D infoformer name: 4th Dimension  Xexclude from comparisonAlibaba Cloud AnalyticDB for PostgreSQL infoformer name was HybridDB  Xexclude from comparisonDolphinDB  Xexclude from comparisonEJDB  Xexclude from comparison
DescriptionApplication development environment with integrated database management systemAn online MPP (Massively Parallel Processing) data warehousing service based on GreenplumDolphinDB 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.Embeddable document-store database library with JSON representation of queries (in MongoDB style)
Primary database modelRelational DBMSRelational DBMSTime Series DBMSDocument store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.58
Rank#108  Overall
#54  Relational DBMS
Score0.68
Rank#231  Overall
#105  Relational DBMS
Score4.13
Rank#80  Overall
#6  Time Series DBMS
Score0.27
Rank#297  Overall
#44  Document stores
Websitewww.4d.comwww.alibabacloud.com/­product/­hybriddb-postgresqlwww.dolphindb.comgithub.com/­Softmotions/­ejdb
Technical documentationdeveloper.4d.comwww.alibabacloud.com/­help/­en/­analyticdb-for-postgresql/­latest/­product-introduction-overviewdocs.dolphindb.cn/­en/­help200/­index.htmlgithub.com/­Softmotions/­ejdb/­blob/­master/­README.md
Developer4D, IncAlibaba / Pivotal Software Inc. / PostgreSQL Global Development GroupDolphinDB, IncSoftmotions
Initial release1984201620182012
Current releasev20, April 2023v2.00.4, January 2022
License infoCommercial or Open Sourcecommercialcommercialcommercial infofree community version availableOpen Source infoGPLv2
Cloud-based only infoOnly available as a cloud servicenoyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C
Server operating systemsOS X
Windows
hostedLinux
Windows
server-less
Data schemeyesyesyesschema-free
Typing infopredefined data types such as float or dateyesyesyesyes infostring, integer, double, bool, date, object_id
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.yesyesno
Secondary indexesyesyesyesno
SQL infoSupport of SQLyes infoclose to SQL 92yesSQL-like query languageno
APIs and other access methodsODBC
RESTful HTTP API infoby using 4D Mobile
SOAP webservices
JDBC
ODBC
JDBC
JSON over HTTP
Kafka
MQTT (Message Queue Telemetry Transport)
ODBC
OPC DA
OPC UA
RabbitMQ
WebSocket
in-process shared library
Supported programming languages4D proprietary IDE
PHP
C
Java
Perl
Python
R
C#
C++
Go
Java
JavaScript
MatLab
Python
R
Rust
Actionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
Server-side scripts infoStored proceduresyesyesyesno
Triggersyesyesnono
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infoImplicit feature of the cloud servicehorizontal partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replicationyes infoImplicit feature of the cloud serviceyesnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integrityyesyesnono infotypically not needed, however similar functionality with collection joins possible
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDACIDyesno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes infoRead/Write Locking
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlUsers and groupsfine grained access rights according to SQL-standardAdministrators, Users, Groupsno

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More resources
4D infoformer name: 4th DimensionAlibaba Cloud AnalyticDB for PostgreSQL infoformer name was HybridDBDolphinDBEJDB
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