13 Tutorial Topics
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## Introduction ## When working on Java applications, it is very likely that you will run into JDBC at some point. While you are unlikely to have to work directly with JDBC when using frameworks, it is still important to know how the connection is established and how queries are …
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## Introduction ## When working with Room, you might have run into a situation where you only want to update specific fields of an entity instead of replacing the entire row. In this tutorial, we will learn how to do this in two different ways. ## Goals ## At the … |
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## Introduction ## When working with Room, you might have wondered how to run multiple statements in a single transaction. Running multiple statements in one transaction has two main benefits: 1. Your statements can reuse the same connection. 2. They can all fail together if something goes wrong. Regarding the … |
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## Introduction ## When working with Room, you might have wondered how to describe one-to-many relationships between entities. In this tutorial, we will learn how to do just that. ## Goals ## At the end of the tutorial, you would have learned: 1. How to define one-to-many relationship for entities … |
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## Introduction ## There are many ways to describe relationships between Entities in Room, one of which is to embed an entity inside of another. When embedding an Entity, the columns of the embedded Entity are extracted as member columns of the enclosing entity. In this tutorial, we will learn … |
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## Introduction ## When working with Room, there might come a situation during bulk CRUD operations that it would be useful to add a Foreign Key to one of our tables. This provides two main benefits: cascading delete (*must be configured manually*) and enforcing data integrity on linked entities. In … |
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## Introduction ## If your Android Application uses Room, then you might have wondered how to prepopulate a Room database. In this tutorial, we will learn how to prepopulate a Room database. ## Goals ## At the end of the tutorial, you would have learned: 1. How to prepopulate a … |
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## Introduction ## When working with a Room database, we are mostly restricted to save data using primitives (*and boxed primitives*). Reference types are not supported right out of the box, but can be enabled by creating additional [TypeConverter](https://developer.android.com/reference/androidx/room/TypeConverter). If you are familiar with ORM-light frameworks such as Spring JDBC, … |
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## Introduction ## One of the best debugging tools in Android Studio is the *live database inspector*. It allows developers to peek at the current state of the database and even run queries against it. In this tutorial, we will learn how to use it to debug a local SQLite … |
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[ATTACH=RIGHT]20145[/ATTACH][B]Building your first DYNAMIC Database application. This is Part One of a four part tutorial on how to install and use your database, Part Two will teach you how to build successful connections and Part Three will teach you how to build database interaction and management of your databases.[/B] There …
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Hello, This tutorial is the next of “[A simple Data Layer for OOP PHP Applications](https://www.daniweb.com/programming/web-development/tutorials/500118/a-simple-data-layer-for-oop-php-applications)” so having read it and made your own tests is needed to understanding what we are doing. So far we have a Db object (child of PDO that standardize and simplifies its use) , a …
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A simple Data Layer for OOP PHP Applications Hello, first of all to understand this tutorial would be best if you have some knowledges about OOP ( https://www.daniweb.com/programming/web-development/tutorials/437592/introduction-to-phps-object-orientation by priteas ) and DB usage (MySQL in this case) with PHP https://www.daniweb.com/programming/web-development/threads/499320/common-issues-with-mysql-and-php by diafol ). What we will try to achieve …
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After spending some time on JSP section of this forum as many before me, I come to the conclusion that we are in need of "proper" tutorial on this topic. This tutorial is not intended to teach you everything from top to bottom, it is just a starting point to … |
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