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DBMS > AlaSQL vs. IBM Cloudant vs. ToroDB vs. VelocityDB

System Properties Comparison AlaSQL vs. IBM Cloudant vs. ToroDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameAlaSQL  Xexclude from comparisonIBM Cloudant  Xexclude from comparisonToroDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
ToroDB seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
DescriptionJavaScript DBMS libraryDatabase as a Service offering based on Apache CouchDBA MongoDB-compatible JSON document store, built on top of PostgreSQLA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelDocument store
Relational DBMS
Document storeDocument storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.42
Rank#264  Overall
#42  Document stores
#122  Relational DBMS
Score2.85
Rank#95  Overall
#18  Document stores
Score0.00
Rank#385  Overall
#40  Graph DBMS
#21  Object oriented DBMS
Websitealasql.orgwww.ibm.com/­products/­cloudantgithub.com/­torodb/­servervelocitydb.com
Technical documentationgithub.com/­AlaSQL/­alasqlcloud.ibm.com/­docs/­Cloudantvelocitydb.com/­UserGuide
DeveloperAndrey Gershun & Mathias R. WulffIBM, Apache Software Foundation infoIBM acquired Cloudant in February 20148KdataVelocityDB Inc
Initial release2014201020162011
Current release7.x
License infoCommercial or Open SourceOpen Source infoMIT-LicensecommercialOpen Source infoAGPL-V3commercial
Cloud-based only infoOnly available as a cloud servicenoyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaScriptErlangJavaC#
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)hostedAll OS with a Java 7 VMAny that supports .NET
Data schemeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenonoyes infostring, integer, double, boolean, date, object_idyes
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.nononono
Secondary indexesnoyesyes
SQL infoSupport of SQLClose to SQL99, but no user access control, stored procedures and host language bindings.nono
APIs and other access methodsJavaScript APIRESTful HTTP/JSON API.Net
Supported programming languagesJavaScriptC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
Server-side scripts infoStored proceduresnoView functions (Map-Reduce) in JavaScriptno
TriggersyesyesnoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneShardingShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneMulti-source replication
Source-replica replication
Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual ConsistencyEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayes infoonly for local storage and DOM-storageno infoatomic operations within a document possiblenoACID
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyes
Durability infoSupport for making data persistentyes infoby using IndexedDB, SQL.JS or proprietary FileStorageyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes
User concepts infoAccess controlnoAccess rights for users can be defined per databaseAccess rights for users and rolesBased on Windows Authentication

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More resources
AlaSQLIBM CloudantToroDBVelocityDB
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