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DBMS > NSDb vs. PostgreSQL vs. SQLite vs. XTDB

System Properties Comparison NSDb vs. PostgreSQL vs. SQLite vs. XTDB

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Editorial information provided by DB-Engines
NameNSDb  Xexclude from comparisonPostgreSQL  Xexclude from comparisonSQLite  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionScalable, High-performance Time Series DBMS designed for Real-time Analytics on top of KubernetesWidely used open source RDBMS infoDeveloped as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQLWidely used embeddable, in-process RDBMSA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelTime Series DBMSRelational DBMS infowith object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.Relational DBMSDocument store
Secondary database modelsDocument store
Graph DBMS infowith Apache Age
Spatial DBMS
Vector DBMS infowith pgvector extension
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.00
Rank#396  Overall
#42  Time Series DBMS
Score645.05
Rank#4  Overall
#4  Relational DBMS
Score116.01
Rank#10  Overall
#7  Relational DBMS
Score0.09
Rank#351  Overall
#47  Document stores
Websitensdb.iowww.postgresql.orgwww.sqlite.orggithub.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationnsdb.io/­Architecturewww.postgresql.org/­docswww.sqlite.org/­docs.htmlwww.xtdb.com/­docs
DeveloperPostgreSQL Global Development Group infowww.postgresql.org/­developerDwayne Richard HippJuxt Ltd.
Initial release20171989 info1989: Postgres, 1996: PostgreSQL20002019
Current release16.2, February 20243.45.3  (15 April 2024), April 20241.19, September 2021
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infoBSDOpen Source infoPublic DomainOpen Source infoMIT License
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Aiven for PostgreSQL: Fully managed PostgreSQL for developers with 70+ extensions and flexible orchestration tools.
Implementation languageJava, ScalaCCClojure
Server operating systemsLinux
macOS
FreeBSD
HP-UX
Linux
NetBSD
OpenBSD
OS X
Solaris
Unix
Windows
server-lessAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesyes infodynamic column typesschema-free
Typing infopredefined data types such as float or dateyes: int, bigint, decimal, stringyesyes infonot rigid because of 'dynamic typing' concept.yes, 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.noyes infospecific XML-type available, but no XML query functionality.nono
Secondary indexesall fields are automatically indexedyesyesyes
SQL infoSupport of SQLSQL-like query languageyes infostandard with numerous extensionsyes infoSQL-92 is not fully supportedlimited SQL, making use of Apache Calcite
APIs and other access methodsgRPC
HTTP REST
WebSocket
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
ADO.NET infoinofficial driver
JDBC infoinofficial driver
ODBC infoinofficial driver
HTTP REST
JDBC
Supported programming languagesJava
Scala
.Net
C
C++
Delphi
Java infoJDBC
JavaScript (Node.js)
Perl
PHP
Python
Tcl
Actionscript
Ada
Basic
C
C#
C++
D
Delphi
Forth
Fortran
Haskell
Java
JavaScript
Lisp
Lua
MatLab
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
R
Ruby
Scala
Scheme
Smalltalk
Tcl
Clojure
Java
Server-side scripts infoStored proceduresnouser defined functions inforealized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.nono
Triggersyesyesno
Partitioning methods infoMethods for storing different data on different nodesShardingpartitioning by range, list and (since PostgreSQL 11) by hashnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication infoother methods possible by using 3rd party extensionsnoneyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes infovia file-system locksyes
Durability infoSupport for making data persistentUsing Apache Luceneyesyesyes, 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.noyes
User concepts infoAccess controlfine grained access rights according to SQL-standardno

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More resources
NSDbPostgreSQLSQLiteXTDB infoformerly named Crux
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