Realm Database - A Preview

Posted by Sajan Agrawal on February 17th, 2020

Realm database

Image source :

Isn’t it amazing that mobile apps enable you to manage your simplest as well as the most complex tasks, at your fingertips? Anything you think of, right from instant money transfer, booking air or train tickets, hotel reservations, so on and so forth, mobile apps are everywhere and make everything readily accessible. A successful mobile app invites millions of users everyday, whose data needs to be stored securely in a storage engine. The system performance goes for a toss, if the load on the database keeps increasing. In situations like these, a robust database which can handle colossal data is a must. One such powerful DB is the Realm Database.

Let us delve deep and get down to the nitty gritties of the Realm Database.

Basic Architecture of the Realm Database

Realm database architecture

Image Source :

Built on a client server structure, Realm platform works majorly with two components namely the Realm Database and the Realm Object Server, that are connected with a sync protocol and work in tandem, to keep the data synchronized.

1. Realm Database

-Realm Database is a lightweight, NoSQL based, cross platform mobile database for iOS and Android platforms. It is an object oriented database that is specialized for maintaining persistent data.

-Realm is compatible with several programming languages such as Objective-C, Swift , Java, JavaScript , C# etc which makes it the preferred database for iOS, Android, React and also Xamarin developers.

-Realm Database works on “live object sharing” wherein it works in sync with the Realm Object Server, to maintain live data synchronization.

2. Realm Object Server

-Realm Object Server is the bridge between the Realm Database and the device, that is primarily responsible to maintain sync with the DB for continuously supporting data synchronization, in real time.

-It also takes care of event handling, managing communications, authentications and access control procedures..

Benefits of the Realm Database

Realm database benefits

Image Source :

Realm is a mighty database and is specially designed for modern mobile applications that are fast, responsive and highly performant. Below listed are the salient features of Realm database.


As mentioned in the beginning of this article, it is imperative that a database handles huge volumes of data without compromising on data availability and user experience.
Realm database, irrespective of the data load, is capable of handling massive network traffic and performs smoothly in such critical situations.

Data Persistency

In general, there is a lot of complex coding and additional resources required to maintain data persistence. This adds to delay in development time and also, handling the complexity of the code is cumbersome. Realm database simplifies this issue by
maintaining persistent data, which means that data is stored even after the process it was created with, has expired. This is one of the most prominent features of the Realm .

Ease of handling Code

The process of coding in Realm is simple and brief. Unlike SQLite, which includes writing multiple lines of code even for a simple query, coding in Realm is a breeze with very few lines of code achieving the same results in a fraction of seconds.

Live Data Synchronization and High Availability

The sync protocol between the Realm Database and the Object Server ensures that data is always synchronized and refreshed in real time without the need of serialization and networking. This is an additional perk as it makes the user experience seamless, subsequently guaranteeing user retention.

Performance and Speed

Realm has been designed particularly to eliminate the drawbacks of SQLite and CoreData. Realm is better and faster while performing CRUD operations. Queries return results in split seconds, thereby improving the whole performance of the application.

Why is Realm Database the chosen one?

Realm Database is the perfect alternative to SQLite and other mobile app databases as it holds a higher ground when it comes to building interactive and responsive mobile applications. It has several notable features that make it the most sought after mobile database.


Sajan Agrawal

About the Author

Sajan Agrawal
Joined: December 12th, 2019
Articles Posted: 19

Download The App - Celsius
Buy, Earn & Borrow on the Blockchain. Celsius Network lets you buy coins, earn interest on your crypto and borrow against it.
CryptoSlots: $1,000,000 Jackpot & Provably Fair Games
Provably Fair games, exciting wins, huge bonuses. ★CryptoSlots★ is your crypto casino of choice. Sign up in seconds to start winning!
MXC | Bitcoin Trading Platform-Bitcoin_Litecoin Real-time Price Quotes | MXC Exchange
MXC Exchange is the world's leading digital asset platform. It provides real-time price quotations in multiple currencies such as BTC, LTC and ETH, and supports hundreds of digital assets trading and investment information. MXC Exchange is best choice
Bitcoin Exchange | Cryptocurrency Exchange | Binance
Binance cryptocurrency exchange - We operate the worlds biggest bitcoin exchange and altcoin crypto exchange in the world by volume
BitStarz Online Casino
BitStarz is an award-winning bitcoin casino offering more than 2,200 casino games including slot machines, blackjack, poker, roulette, baccarat, bingo and more!
HOTBIT Crypto Exchange
Hotbit is one of the professional digital asset exchange platforms that provide trading services among major digital currencies like Bitcoin, Litecoin and Ethereum for users from all over the world.