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DBMS > AlaSQL vs. Firebase Realtime Database vs. H2 vs. IBM Cloudant vs. Memcached

System Properties Comparison AlaSQL vs. Firebase Realtime Database vs. H2 vs. IBM Cloudant vs. Memcached

Editorial information provided by DB-Engines
NameAlaSQL  Xexclude from comparisonFirebase Realtime Database  Xexclude from comparisonH2  Xexclude from comparisonIBM Cloudant  Xexclude from comparisonMemcached  Xexclude from comparison
DescriptionJavaScript DBMS libraryCloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.Database as a Service offering based on Apache CouchDBIn-memory key-value store, originally intended for caching
Primary database modelDocument store
Relational DBMS
Document storeRelational DBMSDocument storeKey-value store
Secondary database modelsSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.51
Rank#256  Overall
#40  Document stores
#118  Relational DBMS
Score13.64
Rank#39  Overall
#6  Document stores
Score8.33
Rank#46  Overall
#30  Relational DBMS
Score2.75
Rank#104  Overall
#19  Document stores
Score18.08
Rank#32  Overall
#4  Key-value stores
Websitealasql.orgfirebase.google.com/­products/­realtime-databasewww.h2database.comwww.ibm.com/­products/­cloudantwww.memcached.org
Technical documentationgithub.com/­AlaSQL/­alasqlfirebase.google.com/­docs/­databasewww.h2database.com/­html/­main.htmlcloud.ibm.com/­docs/­Cloudantgithub.com/­memcached/­memcached/­wiki
DeveloperAndrey Gershun & Mathias R. WulffGoogle infoacquired by Google 2014Thomas MuellerIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014Danga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournal
Initial release20142012200520102003
Current release2.2.220, July 20231.6.27, May 2024
License infoCommercial or Open SourceOpen Source infoMIT-LicensecommercialOpen Source infodual-licence (Mozilla public license, Eclipse public license)commercialOpen Source infoBSD license
Cloud-based only infoOnly available as a cloud servicenoyesnoyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaScriptJavaErlangC
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)hostedAll OS with a Java VMhostedFreeBSD
Linux
OS X
Unix
Windows
Data schemeschema-freeschema-freeyesschema-freeschema-free
Typing infopredefined data types such as float or datenoyesyesnono
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 indexesnoyesyesyesno
SQL infoSupport of SQLClose to SQL99, but no user access control, stored procedures and host language bindings.noyesnono
APIs and other access methodsJavaScript APIAndroid
iOS
JavaScript API
RESTful HTTP API
JDBC
ODBC
RESTful HTTP/JSON APIProprietary protocol
Supported programming languagesJavaScriptJava
JavaScript
Objective-C
JavaC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Server-side scripts infoStored proceduresnolimited functionality with using 'rules'Java Stored Procedures and User-Defined FunctionsView functions (Map-Reduce) in JavaScriptno
TriggersyesCallbacks are triggered when data changesyesyesno
Partitioning methods infoMethods for storing different data on different nodesnonenoneShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneWith clustering: 2 database servers on different computers operate on identical copies of a databaseMulti-source replication
Source-replica replication
none infoRepcached, a Memcached patch, provides this functionallity
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual Consistency infoif the client is offline
Immediate Consistency infoif the client is online
Immediate ConsistencyEventual Consistency
Foreign keys infoReferential integrityyesnoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayes infoonly for local storage and DOM-storageyesACIDno infoatomic operations within a document possibleno
Concurrency infoSupport for concurrent manipulation of datayesyes, multi-version concurrency control (MVCC)yes infoOptimistic lockingyes
Durability infoSupport for making data persistentyes infoby using IndexedDB, SQL.JS or proprietary FileStorageyesyesyesno
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlnoyes, based on authentication and database rulesfine grained access rights according to SQL-standardAccess rights for users can be defined per databaseyes infousing SASL (Simple Authentication and Security Layer) protocol

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AlaSQLFirebase Realtime DatabaseH2IBM CloudantMemcached
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