DBMS > Realm
Realm System Properties
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|Editorial information provided by DB-Engines|
|Description||A DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Data|
|Primary database model||Document store|
|Developer||Realm, acquired by MongoDB in May 2019|
|License Commercial or Open Source||Open Source|
|Cloud-based only Only available as a cloud service||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Android|
|Typing predefined data types such as float or date||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|
|SQL Support of SQL||no|
|Supported programming languages||.Net|
Java with Android only
|Server-side scripts Stored procedures||no runs within the applications so server-side scripts are unnecessary|
|Triggers||yes Change Listeners|
|Partitioning methods Methods for storing different data on different nodes||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency|
|Foreign keys Referential integrity||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID|
|Durability Support for making data persistent||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes In-Memory realm|
|User concepts Access control||yes|
|More information provided by the system vendor|
Now a part of MongoDB Data Platform, Realm Database is the fast, easy to use, and open source alternative to SQLite and Core Data. Used by over 100k+ developers and downloaded over 2 billion times, Realm powers the world’s most innovative products and services.
Built for use on mobile devices, Realm solves for the common challenges of mobile development that are caused by inconsistent network connectivity, device constraints, and the need to build apps that provide a consistent experience across multiple platforms.
By embedding a full-featured database directly on the users’ device, Realm makes data access fast and efficient, regardless of the amount of data or quality of connection. Apps built on Realm are ACID compliant, function even when offline, and enable a seamless cross-platform experience. With support for complex queries, safe threading, encryption, and a reactive architecture to create responsive and fluent UIs, Realm allows developers to simply their code and focus on building powerful and engaging cross-platform experiences.
Realm ensures offline-first functionality, meaning apps run smoothly and deliver a best-in-class experience even when users lack a strong connection. Even complex queries complete in nano-seconds, making Realm faster than alternative mobile databases. And Realm eliminates the need to maintain an ORM by using objects to store data, meaning it is fast for developers to learn, easy to use, and simplifies data persistence for mobile devices.
|Typical application scenarios|
|Licensing and pricing models|
Realm database is licensed under the Apache License v2.0.
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|DB-Engines blog posts|
MySQL, PostgreSQL and Redis are the winners of the March ranking On Point: Q&A with Lewis Shepherd | SIGNAL Magazine provided by Google News Android Software Engineer iOS Tooling Engineer
On Point: Q&A with Lewis Shepherd | SIGNAL Magazine
provided by Google News
Android Software Engineer
iOS Tooling Engineer
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