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With simple command in Cocoapods, you here to go to work with Realm. Installing Realm is more easy as you imagine. Easy Installation: As you will see in next section about working with Realm.Here I will try to collect all advantages and reasons for why making Realm is the best choice to work with database in your mobile app:

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Realm is incredibly fast and easy to use and you will see everything you need will be accomplished with just couple of lines of code regardless it’s reading or writing to database. Realm is designed to be easy to use as it not an ORM and it uses its own persistence engine to give you the performance and speed. Now to deal with mobile database, you have only one options which is SQLite or any wrapper that uses SQLite behind the scene like Core Data. Realm is built to target mobile apps only as in the last decade we didn’t notice any innovation in mobile databases.

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Realm is totally free and you can use it without any limits. It is not just better or faster, it’s also easier to use and you can do a lot of things with just few lines of code. Realm is built to be better and faster than SQLite and Core Data. Realm is a cross platform mobile database for iOS (available in Swift & Objective-C) and Android. Recently, I have come across with Realm, a new better replacement for SQLite and Core Data. I was a big fan of Core Data and its power to deal with records and persisting data but I realized that I waste much time dealing with it while developing apps. It really causes a terrible headache for each one of us and I think nowadays you hav only two options: SQLite and Core Data. So one of the problems that face many developers nowadays, is dealing with Database. When you succeed in have millions of users to your app, you have to care about everything in your app and perform all operations in no time.

And to make your app ready for scalability is more harder. To rock in the app store today is not an easy job. On the other hand, as a highly integrated tool, flexibility is sacrificed. Using Realm means that you will have to follow its strictly pre-defined methods and procedures.įor a traditional SQLite + ORM setup, if there is a case where the ORM of your choice cannot cater to, you can always write your own standard SQL code. This is something almost, if not entirely, impossible to do with Realm.After the big evolution in smart phones in the last years, a lot of tools have been developed to make life easier and simpler for developers to deliver the best performance and quality. Also, using a light-weight SQLite + ORM alternative also means that your app will be slightly smaller, which might appeal to some users. On the bright side, being fast and light-weighted is a huge advantage when it comes to building mobile applications. Query the first Post: post = realm.where(Post.class).findFirst() tBody('Main body passage we write along') Post post = realm.createObject(Post.class) This is how we define a Post record for Realm: Realm realm = Realm.getInstance(this.getContext()) IMHO, the simplicity and minimalistic nature of Realm is its biggest advantage, but also its limitation over other solutions at the same time. Realm is said to be lightweight and fast compared to traditional solutions, like using SQLite and a fully-fledged ORM.īundling Realm into your app saves space and is capable of doing pretty much the same thing.

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To get Realm for your Android project, you can use either Maven or add a Jar into the project.įor more, see the official installation guide Realm is also cross-platform that supports both iOS and Android, so developers who write Java, Swift, Objective-C can share the same Realm files painlessly. It persists on its own persistence engine. However, Realm is NOT built on top of SQLite. It’s like using SQLite with an ORM (as those who used SQLAlchemy may have experience), with a lot of awesome and convenient methods for data transactions. Realm is the mobile database solution that proposed as a replacement for SQLite & Core Data. More is discussed below in details and with example snippets. We think it’s a minimalistic yet reliable solution, and is worth giving it a shot for your next app. Just beware of the differences between versions, follow the conventions, and pay extra attention when using with other libraries. In one of the Android app projects at Oursky, we started using Realm for data caching. So users won’t have to look at blank pages when they log back to the app, waiting for remote API results.

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