What is Realm?
The center idea of the Realm Mobile Platform is a lightweight object container called a Realm.
Not at all like a conventional database, however, object in Realms are live and completely receptive. Realms synchronize consistently between device and applications, and can be accessed safely across threads.Like a database, data in Realms can be queried and filtered, interconnected, and persisted.
It's lightweight and exceptionally easy to integrate in your project.Realm is a cross-platform mobile database designed specifically for mobile applications.
Realm Database is considerably faster than an ORM, and frequently quicker than SQLite. Begin in minutes, not hours.
Realm Database is an other best option to SQLite and Core Data. Because of its zero-duplicate design. You never need to consider organizing code again.It conveys programmed and consistent realtime information synchronize and powerful event handling between server and devices.Realm is the best decision for your mobile database.
The Realm Object Server is prepared to keep running on your servers or on your most loved cloud.The Realm Mobile Database supporting the iOS and Android.
The Realm Mobile Database is supported for Android-Java, iOS-Objective-C-Swift, Xamarin, React Native, and Node.js.
What does it?
Here's a overview of the Realm classes and concept
Realm: You will make instances utilizing the Realm() initializer.Realm instances are the core of the framework; it's your entrance point to the hidden database, like a Core Data managed object context.
Object: The demonstration of making a model defines the schema of the database; to make a model you just subclass Object and define the fields you need to persist as properties.
Relationships:You can make many-to-one and many-to-many relationships by property of type List, which drives you to. You make one-to-many relationships between objects by basically proclaiming a property of the type of the Object you need to refer to.
Write Transactions: Any operations in the database, for example, creating, editing, or deleting objects must be performed inside composes which are done by calling write(_:) on Realm instances.
Queries: To recover objects from the database you'll have to utilize queries.If your data retrieval needs are more complex you can make use of predicates, chain your queries, chain your queries, and request your outcomes too.
The easiest form of a queries is calling objects() on a Realm instance, passing in the class of the Object you are looking for.
Results: Results is an auto updating container type that you get back from object queries. They have a great deal of similarities with regular Arrays, including the subscript syntax grabbing an item at an index.