DBMS > Firebase Realtime Database vs. Lovefield vs. Microsoft Azure Search

System Properties Comparison Firebase Realtime Database vs. Lovefield vs. Microsoft Azure Search

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Editorial information provided by DB-Engines
Name	Firebase Realtime Database  Xexclude from comparison	Lovefield  Xexclude from comparison	Microsoft Azure Search  Xexclude from comparison
Description	Cloud-hosted realtime document store. iOS, Android, and JavaScript clients share one Realtime Database instance and automatically receive updates with the newest data.	Embeddable relational database for web apps written in pure JavaScript	Search-as-a-service for web and mobile app development
Primary database model	Document store	Relational DBMS	Search engine
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 18.48 Rank #39   Overall #6   Document stores	Score 0.23 Rank #286   Overall #134   Relational DBMS	Score 7.61 Rank #58   Overall #6   Search engines
Website	firebase.google.com/­products/­realtime-database	google.github.io/­lovefield	azure.microsoft.com/­en-us/­services/­search
Technical documentation	firebase.google.com/­docs/­database	github.com/­google/­lovefield/­blob/­master/­docs/­spec_index.md	docs.microsoft.com/­en-us/­azure/­search
Developer	Google acquired by Google 2014	Google	Microsoft
Initial release	2012	2014	2015
Current release		2.1.12, February 2017	V1
License Commercial or Open Source	commercial	Open Source Apache 2.0	commercial
Cloud-based only Only available as a cloud service	yes	no	yes
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Implementation language		JavaScript
Server operating systems	hosted	server-less, requires a JavaScript environment (browser, Node.js) tested with Chrome, Firefox, IE, Safari	hosted
Data scheme	schema-free	yes	yes
Typing predefined data types such as float or date	yes	yes	yes
XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.	no	no	no
Secondary indexes	yes	yes	yes
SQL Support of SQL	no	SQL-like query language via JavaScript builder pattern	no
APIs and other access methods	Android iOS JavaScript API RESTful HTTP API		RESTful HTTP API
Supported programming languages	Java JavaScript Objective-C	JavaScript	.Net C#
Server-side scripts Stored procedures	limited functionality with using 'rules'	no	no
Triggers	Callbacks are triggered when data changes	Using read-only observers	no
Partitioning methods Methods for storing different data on different nodes		none	Sharding Implicit feature of the cloud service
Replication methods Methods for redundantly storing data on multiple nodes		none	yes Implicit feature of the cloud service
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency if the client is offline Immediate Consistency if the client is online		Immediate Consistency
Foreign keys Referential integrity	no	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	yes	ACID	no
Concurrency Support for concurrent manipulation of data	yes	yes	yes
Durability Support for making data persistent	yes	yes, by using IndexedDB or the cloud service Firebase Realtime Database	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.		yes using MemoryDB	no
User concepts Access control	yes, based on authentication and database rules	no	yes using Azure authentication
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More resources
	Firebase Realtime Database	Lovefield	Microsoft Azure Search
DB-Engines blog posts	Cloud-based DBMS's popularity grows at high rates 12 December 2019, Paul Andlinger show all