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DBMS > KeyDB vs. LevelDB vs. SAP SQL Anywhere vs. VelocityDB vs. XAP

System Properties Comparison KeyDB vs. LevelDB vs. SAP SQL Anywhere vs. VelocityDB vs. XAP

Editorial information provided by DB-Engines
NameKeyDB  Xexclude from comparisonLevelDB  Xexclude from comparisonSAP SQL Anywhere infoformerly called Adaptive Server Anywhere  Xexclude from comparisonVelocityDB  Xexclude from comparisonXAP  Xexclude from comparison
DescriptionAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesRDBMS database and synchronization technologies for server, desktop, remote office, and mobile environmentsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)High performant in-memory data grid for mission critical applications. Insight Edge from the same company extends XAP for AI/ML support, BI and other interfaces
Primary database modelKey-value storeKey-value storeRelational DBMSGraph DBMS
Object oriented DBMS
Document store
Key-value store infoValues are user defined objects
Secondary database modelsObject oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.15
Rank#275  Overall
#44  Key-value stores
Score2.80
Rank#87  Overall
#15  Key-value stores
Score5.23
Rank#60  Overall
#33  Relational DBMS
Score0.07
Rank#298  Overall
#27  Graph DBMS
#16  Object oriented DBMS
Score0.79
Rank#167  Overall
#25  Document stores
#29  Key-value stores
Websitegithub.com/­JohnSully/­KeyDB
keydb.dev
github.com/­google/­leveldbwww.sap.com/­products/­sql-anywhere.htmlvelocitydb.comwww.gigaspaces.com/­products/­xap
Technical documentationdocs.keydb.dev/­docs/­introgithub.com/­google/­leveldb/­blob/­master/­doc/­index.mdhelp.sap.com/­sql-anywherevelocitydb.com/­UserGuidedocs.gigaspaces.com/­latest/­landing.html
DeveloperEQ Alpha Technology Ltd.GoogleSAP infoformerly SybaseVelocityDB IncGigaspaces Technologies
Initial release20192011199220112000
Current release1.22, May 201917, July 20157.x14.5.0, June 2019
License infoCommercial or Open SourceOpen Source infoBSD-3Open Source infoBSDcommercialcommercialOpen Source infoApache Version 2; Commercial licenses available
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++C++C#Java, C++, .Net
Server operating systemsLinuxIllumos
Linux
OS X
Windows
AIX
HP-UX
Linux
OS X
Solaris
Windows
Any that supports .NETLinux
macOS
Solaris
Windows
Data schemeschema-freeschema-freeyesyesschema-free
Typing infopredefined data types such as float or datepartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesnoyesyesyes
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.nonoyesnono infoXML can be used for describing objects metadata
Secondary indexesyes infoby using the Redis Search modulenoyesyesyes
SQL infoSupport of SQLnonoyesnoSQL-like query language and DML statements
APIs and other access methodsProprietary protocol infoRESP - REdis Serialization ProtocoADO.NET
HTTP API
JDBC
ODBC
.NetGigaSpaces LRMI
Hibernate
JCache
JDBC
JPA
ODBC
RESTful HTTP API
Spring Data
Supported programming languagesC
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
C++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
C
C#
C++
Delphi
Java
JavaScript (Node.js)
Perl
PHP
Python
Ruby
.Net.Net
C++
Java
Server-side scripts infoStored proceduresLuanoyes, in C/C++, Java, .Net or Perlnoyes
TriggersnonoyesCallbacks are triggered when data changesyes infoEvent Listeners
Partitioning methods infoMethods for storing different data on different nodesShardingnonenoneShardingSharding infoHash based
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-slave replication
Multi-master replication
noneMaster-slave replication infoDatabase mirroringMaster-master replication infosynchronous or asynchronous
Master-slave replication infosynchronous or asynchronous
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononoyes infoMap-Reduce pattern can be built with XAP task executors
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Strong eventual consistency with CRDTs
Immediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency infoConsistency level configurable: ALL, QUORUM, ANY
Foreign keys infoReferential integritynonoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataOptimistic locking, atomic execution of commands blocks and scriptsnoACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyes infowith automatic compression on writesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesyesyes
User concepts infoAccess controlsimple password-based access control and ACLnofine grained access rights according to SQL-standardBased on Windows AuthenticationRole-based access control

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More resources
KeyDBLevelDBSAP SQL Anywhere infoformerly called Adaptive Server AnywhereVelocityDBXAP
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