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DBMS > 4D vs. Cloudflare Workers KV vs. Couchbase vs. EJDB

System Properties Comparison 4D vs. Cloudflare Workers KV vs. Couchbase vs. EJDB

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Editorial information provided by DB-Engines
Name4D infoformer name: 4th Dimension  Xexclude from comparisonCloudflare Workers KV  Xexclude from comparisonCouchbase infoOriginally called Membase  Xexclude from comparisonEJDB  Xexclude from comparison
DescriptionApplication development environment with integrated database management systemA global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.A distributed document store with integrated cache, a powerful search engine, in-built operational and analytical capabilities, and an embedded mobile databaseEmbeddable document-store database library with JSON representation of queries (in MongoDB style)
Primary database modelRelational DBMSKey-value storeDocument storeDocument store
Secondary database modelsKey-value store infooriginating from the former Membase product and supporting the Memcached protocol
Spatial DBMS infousing the Geocouch extension
Search engine
Time Series DBMS
Vector DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.80
Rank#111  Overall
#55  Relational DBMS
Score0.33
Rank#290  Overall
#41  Key-value stores
Score19.15
Rank#36  Overall
#5  Document stores
Score0.30
Rank#302  Overall
#44  Document stores
Websitewww.4d.comwww.cloudflare.com/­developer-platform/­workers-kvwww.couchbase.comgithub.com/­Softmotions/­ejdb
Technical documentationdeveloper.4d.comdevelopers.cloudflare.com/­kv/­apidocs.couchbase.comgithub.com/­Softmotions/­ejdb/­blob/­master/­README.md
Developer4D, IncCloudflareCouchbase, Inc.Softmotions
Initial release1984201820112012
Current releasev20, April 2023Server: 7.2, June 2023; Mobile: 3.1, March 2022; Couchbase Capella (DBaaS), June 2023
License infoCommercial or Open SourcecommercialcommercialOpen Source infoBusiness Source License (BSL 1.1); Commercial licenses also 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++, Go and ErlangC
Server operating systemsOS X
Windows
hostedLinux
OS X
Windows
server-less
Data schemeyesschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyesyes 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.yesno
Secondary indexesyesnoyesno
SQL infoSupport of SQLyes infoclose to SQL 92noSQL++, extends ANSI SQL to JSON for operational, transactional, and analytic use casesno
APIs and other access methodsODBC
RESTful HTTP API infoby using 4D Mobile
SOAP webservices
HTTP REST
Proprietary protocol
CLI Client
HTTP REST
Kafka Connector
Native language bindings for CRUD, Query, Search and Analytics APIs
Spark Connector
Spring Data
in-process shared library
Supported programming languages4D proprietary IDE
PHP
C
C++
Dart
JavaScript
Kotlin
Python
Rust
Scala
.Net
C
Go
Java
JavaScript infoNode.js
Kotlin
PHP
Python
Ruby
Scala
Actionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
Server-side scripts infoStored proceduresyesnoFunctions and timers in JavaScript and UDFs in Java, Python, SQL++no
Triggersyesnoyes infovia the TAP protocolno
Partitioning methods infoMethods for storing different data on different nodesnoneAutomatic Shardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replicationyesMulti-source replication infoincluding cross data center replication
Source-replica replication
none
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyEventual Consistency
Immediate Consistency infoselectable on a per-operation basis
Foreign keys infoReferential integrityyesnonono infotypically not needed, however similar functionality with collection joins possible
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnoACIDno
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 infoEphemeral buckets
User concepts infoAccess controlUsers and groupsUser and Administrator separation with password-based and LDAP integrated Authentication. Role-base access control.no

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More resources
4D infoformer name: 4th DimensionCloudflare Workers KVCouchbase infoOriginally called MembaseEJDB
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