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DBMS > BaseX vs. HarperDB vs. KeyDB vs. SurrealDB

System Properties Comparison BaseX vs. HarperDB vs. KeyDB vs. SurrealDB

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Editorial information provided by DB-Engines
NameBaseX  Xexclude from comparisonHarperDB  Xexclude from comparisonKeyDB  Xexclude from comparisonSurrealDB  Xexclude from comparison
DescriptionLight-weight Native XML DBMS with support for XQuery 3.0 and interactive GUI.HarperDB takes the "stack" out of "tech stack" by combining an ultra-fast document-style data store, in-memory cache, real-time message broker, and your application components into a single distributed technology.An ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsA fully ACID transactional, developer-friendly, multi-model DBMS
Primary database modelNative XML DBMSDocument storeKey-value storeDocument store
Graph DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.56
Rank#141  Overall
#4  Native XML DBMS
Score0.55
Rank#243  Overall
#38  Document stores
Score0.63
Rank#232  Overall
#32  Key-value stores
Score1.11
Rank#174  Overall
#30  Document stores
#17  Graph DBMS
Websitebasex.orgwww.harperdb.iogithub.com/­Snapchat/­KeyDB
keydb.dev
surrealdb.com
Technical documentationdocs.basex.orgdocs.harperdb.io/­docsdocs.keydb.devsurrealdb.com/­docs
DeveloperBaseX GmbHHarperDBEQ Alpha Technology Ltd.SurrealDB Ltd
Initial release2007201720192022
Current release11.2, August 20243.1, August 2021v1.5.0, May 2024
License infoCommercial or Open SourceOpen Source infoBSD licensecommercial infofree community edition availableOpen Source infoBSD-3Open Source
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.
Implementation languageJavaNode.jsC++Rust
Server operating systemsLinux
OS X
Windows
Linux
OS X
LinuxLinux
macOS
Windows
Data schemeschema-freedynamic schemaschema-freeschema-free
Typing infopredefined data types such as float or dateno infoXQuery supports typesyes infoJSON data typespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyes
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.nono
Secondary indexesyesyesyes infoby using the Redis Search module
SQL infoSupport of SQLnoSQL-like data manipulation statementsnoSQL-like query language
APIs and other access methodsJava API
RESTful HTTP API
RESTXQ
WebDAV
XML:DB
XQJ
JDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
Proprietary protocol infoRESP - REdis Serialization ProtocoGraphQL
RESTful HTTP API
WebSocket
Supported programming languagesActionscript
C
C#
Haskell
Java
JavaScript infoNode.js
Lisp
Perl
PHP
Python
Qt
Rebol
Ruby
Scala
Visual Basic
.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
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
Deno
Go
JavaScript (Node.js)
Rust
Server-side scripts infoStored proceduresyesCustom Functions infosince release 3.1Lua
Triggersyes infovia eventsnono
Partitioning methods infoMethods for storing different data on different nodesnoneA table resides as a whole on one (or more) nodes in a clusterSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes infothe nodes on which a table resides can be definedMulti-source replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Strong eventual consistency with CRDTs
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datamultiple readers, single writerAtomic execution of specific operationsOptimistic locking, atomic execution of commands blocks and scriptsACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes, using LMDByes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlUsers with fine-grained authorization concept on 4 levelsAccess rights for users and rolessimple password-based access control and ACLyes, based on authentication and database rules

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More resources
BaseXHarperDBKeyDBSurrealDB
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