This means you get faster running applications and better user experience. Having its own persistence engine, Realm is able to provide a faster and more simplified application. Realm not only provides a simplified method, but is able to replace both SQLite as well as the ORM libraries. It comes with many advanced features that are unavailable in the previous line of work. The objective of Realm is to simplify database management and provide an easier method of application, as well as being swift in its pace. Since, the syntax is similar to SQL it saves time on having to learn any new language. Realm adopts a new, yet familiar approach to your database needs and helps you manage better and faster than SQLite. It is an organized database system specifically created for the Android operating systems (also available for iOS). One of those recent trends in Android development is Realm. What was once complicated and time consuming is now slowly becoming simplified and light on devices. It has many advantages over the old ones, which will be discussing later.Īndroid development has traditionally been a complex task. REALM is a new local mobile database framework. The internal storage engine known as Tight DB, which is basically a closed resource now, but it will be open sourced quickly. The concept follows the ACID principle by using a powerful idea that focuses on ease of use. You can be sure that the configuration values you are using have been set up properly before they are used to open realms.Realm is basically a free object orientated database along with open source libraries for iOS as well as Android. Only initialize your properties using Realm APIs that explicitly take in user-defined configurations. This allows you to safely instantiate such types at any time during your application's lifecycle, as long as you do not attempt to access your lazy properties until after your app has set up its realm configurations. To avoid such issues, consider doing one of the following:ĭefer instantiation of any type that eagerly initializes properties using Realm Database APIs until after your app has completed setting up its realm configurations.ĭefine your properties using Swift's lazy keyword. Realm before it has been correctly configured. Set a migration block for the default realmĬonfiguration in applicationDidFinishLaunching(), but you create anĪpplicationDidFinishLaunching(), you might be accessing your If this initialization code runs before you set up your RealmĬonfigurations, you might get unexpected behavior. Provide a schema version or migration block when making schema changes Pass an encryption key to encrypt a realm Whether and when to compact a realm to reduce its file size Specify the realm use only a subset of your app's classes Provide a logged-in user and Sync details to use Sync with the realm Pass a fileURL or in-memory identifier to customize how the realm is stored on device When you open a realm, you can pass a Realm.Configuration that specifies additional detailsĪbout how to configure the realm file. To learn how to define a Realm object, see In your application, called Realm objects, as well as additional metadata A realm is a collection of the objects that you use Open a Default Realm or Realm at a File URLĪ realm is the core data structure used to organize data in.
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