Database tutorial for a C++ beginner

C++ data persistence beginner tutorial – get started with ObjectBox

Are you a C++ beginner looking for a C++ database that is easy to use? In this tutorial, we’ll explain how you can install ObjectBox on Windows, even if you have never worked with an external library before. Your best option might be to set up a Linux subsystem (WSL2) first. After that, we will install the build tools and some useful development software such as CMake and Git. When this setup is ready, we can jump right into installing ObjectBox and running a simple example with it. We encourage you to explore its source code to get a grasp of ObjectBox in action.

Why use the ObjectBox C++ database as a C++ beginner?

Almost any program that stores some kind of data will benefit from incorporating a database into it. By storing data systematically, you will always be able to easily access, manipulate and search for different entries. Because of its flexibility, a NoSQL database will make a great fit for your first project and will serve you well further down the road. ObjectBox is not an ORM, so you do not need to learn another programming language, and can get started in minutes. ObjectBox uses native C++ APIs, which can be intuitively understood if you have any C++ experience. Furthermore, if you want high performance or your project is created with scalability in mind, a NoSQL database like ObjectBox might be the only viable option.

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Objectbox database for Java / Kotlin 3.0

ObjectBox Android database for Java / Kotlin 3.0 + performance benchmarks

ObjectBox – the high performance Android database for Java / Kotlin – goes 3.0 ❤️ and apart from features. the dev team is also sharing CRUD performance benchmarks including MongoDB Realm and SQLite with Room. ObjectBox Database has been used by over 800,000 developers since the 1.0 release for Android and apart from Java / Kotlin for Android, the ObjectBox DB also has C/C++, Go, Flutter/Dart, Swift bindings now and a superfast Data Sync.

What is ObjectBox?

ObjectBox is a NoSQL ACID-compliant object database and an alternative to SQLite and Room. ObjectBox is optimized for fast object persistence on restricted devices, typically “embedded devices”, sometimes called “edge devices” like e.g. smartphones, IoT gateways, PoS systems, or Controlling Units. Because most applications today include any number of decentralized connected devices, ObjectBox also provides fast and easy access to decentralized edge data through an out-of-the-box Data Sync solution (Early Access).

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Flutter Databases Compared

What is the best Flutter Database?

Flutter Database options are still limited. We compare the available alternatives, and share performance benchmarks. 

How to persist data in Flutter / Dart?

The database market is a long-established saturated market and still experiencing double-digit growth. Most of that growth stems from NoSQL databases and newer database technologies, like time-series databases or graph databases. As Computing is shifting towards Decentralized Computing on the Edge, local databases that support decentralized data flows on Mobile, IoT, and other Embedded Devices come into focus. Some come from the Flutter data persistence world, and we will take a look at them in a second.

databases-time-history

Before we dive into the Flutter database options and compare them, we’re quickly carifying the term to make sure we share a common ground. Don’t worry, we’ll not get theoretical, but simply make sure we share a common language.

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Mobile databases: SQLite and SQLite alternatives for Android and iOS

UPDATED 2022. At Droidcon Berlin, we noticed a lot of questions around databases. Many people weren’t aware of SQLite alternatives and Object-Relational Mappers (ORMs). Therefore, we follow up with an overview of the mobile database landscape.

What is a mobile database?

While Wikipedia defines a mobile database as “either a stationary database that can be connected to by a mobile computing device […] over a mobile network, or a database which is actually stored by the mobile device,” we solely refer to databases that run on the mobile device itself.

Why use a mobile database?

There are some advantages associated with using a mobile database:

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EventBus 3.2 with incremental annotation processing

EventBus 3.2.0 is now available on Maven Central. In 2020, seven years since version 1.0, EventBus is still one of the most used Android libraries. This update addresses advancements in the Gradle build system and supporting Android libraries.

EventBus 3.2 adds incremental processing to the EventBus annotation processor. This can greatly reduce build times – if all involved annotation processors play along (e.g. ObjectBox is getting there too).

The EventBus annotation processor is used when building EventBus with a subscriber index. This is now recommended for all Android apps. It improves run time performance and avoids crashes by looking up subscriber methods via reflection.

EventBus 3.2 also improves support for JetPack/AndroidX. When looking for @Subscribe methods, it now ignores all base classes from the androidx package and its subpackages, e.g. AppCompatActivity (from androidx.appcompat.app) or Fragment (from androidx.fragment.app). Before 3.2, those classes were scanned using reflection, regardless if a subscriber index was available or not.

Those two changes make EventBus faster and more resilient and we hope you consider making this update soon.

The EventBus library is free open source software. If you like it, we appreciate a star on GitHub, a tweet, or any feedback to us. If you use EventBus in a cool app that is a great showcase for its usefulness, we would love to share a case study with our community. Please get in touch.

EventBus 3.1 with plain Java support

With over 25% of the top Android apps using it, EventBus is more popular than ever before. So we’re very happy to announce EventBus 3.1 today. Starting with this release, EventBus works with plain Java (non-Android) projects. This has two major benefits: Firstly, it opens up EventBus for all Java developers and makes it usable for server and desktop applications. Secondly, it allows Android developers to use EventBus in local unit tests. Before, you had to use instrumentation tests which are slow and require a device. In contrast to this, plain Java unit tests are blazingly fast as they run directly on your desktop machine.
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ObjectBox is a Techstars’17 company

We just joined Techstars London with our Mobile Database ObjectBox. We’re really happy to be part of Techstars and to have the opportunity to learn so much. If you’re interested in learning more about that, we will post regular updates on our Techstars’ journey on our ObjectBox Blog. We already posted on our first days at Techstars and how we got into Techstars. Thanks to everyone who helped us on our journey so far, but especially our developer community on github. We could never have done any of our projects without you and we appreciate your feedback and support a lot! Please feel free to ping us with any questions you may have.

ObjectBox 0.9.10 – getting closer to 1.0

Do you know our new super fast mobile database ObjectBox yet? With versions 0.9.9 and the just released 0.9.10, ObjectBox made great progress to stabilize features for the 1.0 release. With an increasing number of apps using ObjectBox, we were able to spot and fix some less obvious issues. We believe that ObjectBox 0.9.10 is the most stable release ever. If you did not dare to check out the beta version yet: now is a good time to have a closer look.

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ObjectBox Documentation Update

We updated ObjectBox’ documentation to account for the growing interest and more specific questions asked in the issue tracker. We published several updates and new documentation resources:

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