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DBMS > DuckDB vs. KeyDB vs. NSDb vs. NuoDB vs. XTDB

System Properties Comparison DuckDB vs. KeyDB vs. NSDb vs. NuoDB vs. XTDB

Editorial information provided by DB-Engines
NameDuckDB  Xexclude from comparisonKeyDB  Xexclude from comparisonNSDb  Xexclude from comparisonNuoDB  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionAn embeddable, in-process, column-oriented SQL OLAP RDBMSAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsScalable, High-performance Time Series DBMS designed for Real-time Analytics on top of KubernetesNuoDB is a webscale distributed database that supports SQL and ACID transactionsA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelRelational DBMSKey-value storeTime Series DBMSRelational DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score4.63
Rank#69  Overall
#37  Relational DBMS
Score0.70
Rank#229  Overall
#32  Key-value stores
Score0.08
Rank#369  Overall
#40  Time Series DBMS
Score0.94
Rank#197  Overall
#92  Relational DBMS
Score0.18
Rank#332  Overall
#46  Document stores
Websiteduckdb.orggithub.com/­Snapchat/­KeyDB
keydb.dev
nsdb.iowww.3ds.com/­nuodb-distributed-sql-databasegithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationduckdb.org/­docsdocs.keydb.devnsdb.io/­Architecturedoc.nuodb.comwww.xtdb.com/­docs
DeveloperEQ Alpha Technology Ltd.Dassault Systèmes infooriginally NuoDB, Inc.Juxt Ltd.
Initial release20182019201720132019
Current release1.0.0, June 20241.19, September 2021
License infoCommercial or Open SourceOpen Source infoMIT LicenseOpen Source infoBSD-3Open Source infoApache Version 2.0commercial infolimited edition freeOpen Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C++Java, ScalaC++Clojure
Server operating systemsserver-lessLinuxLinux
macOS
hosted infoAmazon EC2, Windows Azure, SoftLayer
Linux
OS X
Windows
All OS with a Java 8 (and higher) VM
Linux
Data schemeyesschema-freeyesschema-free
Typing infopredefined data types such as float or dateyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyes: int, bigint, decimal, stringyesyes, extensible-data-notation format
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 indexesyesyes infoby using the Redis Search moduleall fields are automatically indexedyesyes
SQL infoSupport of SQLyesnoSQL-like query languageyeslimited SQL, making use of Apache Calcite
APIs and other access methodsArrow Database Connectivity (ADBC)
CLI Client
JDBC
ODBC
Proprietary protocol infoRESP - REdis Serialization ProtocogRPC
HTTP REST
WebSocket
ADO.NET
JDBC
ODBC
HTTP REST
JDBC
Supported programming languagesC
C# info3rd party driver
C++
Crystal info3rd party driver
Go info3rd party driver
Java
Lisp info3rd party driver
Python
R
Ruby info3rd party driver
Rust
Swift
Zig info3rd party driver
C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
Java
Scala
.Net
C
C++
Go
Java
JavaScript
JavaScript (Node.js)
PHP
Python
Ruby
Clojure
Java
Server-side scripts infoStored proceduresnoLuanoJava, SQLno
Triggersnonoyesno
Partitioning methods infoMethods for storing different data on different nodesnoneShardingShardingdata is dynamically stored/cached on the nodes where it is read/writtennone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneMulti-source replication
Source-replica replication
yes infoManaged transparently by NuoDByes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Strong eventual consistency with CRDTs
Eventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDOptimistic locking, atomic execution of commands blocks and scriptsnoACID infotunable commit protocolACID
Concurrency infoSupport for concurrent manipulation of datayes, multi-version concurrency control (MVCC)yesyesyes infoMVCCyes
Durability infoSupport for making data persistentyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsUsing Apache Luceneyesyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyes infoTemporary table
User concepts infoAccess controlnosimple password-based access control and ACLStandard SQL roles/ privileges, Administrative Users

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More resources
DuckDBKeyDBNSDbNuoDBXTDB infoformerly named Crux
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