Obviously you will need to include the right headers when needed in your source code. To use Qt SQL in a Qt project all you need to do is adding “sql” to the QT configuration variable in the.
SQLITE DATABASE EXAMPLES HOW TO
If you need help to start with Qt you can check out my previous post about how to create an application with Qt and C++. I won’t be discussing the code defining the GUI of this simple Qt application because I want to focus on the one handling the database. Then clicking the SEARCH button will show the corresponding entry or an error message if none is found. There’s a text field to enter a number which represents an ID of an entry in the database. The application discussed in this tutorial is the simplest possible I could think of. In general you want to embed a database in your application to handle data in a simple and well organised way using SQL (Structured Query Language). Qt offers support (drivers) for other popular databases like MySQL and PostgreSQL, but SQLite is the easiest and quickest option for a simple application and it should be more than enough in most cases. Basically a database stored in a single file (or memory). SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. The Qt SQL module provides a driver layer, SQL API layer, and a user interface layer for SQL databases. This tutorial is based on two main components: Qt SQL and SQLite. Full project and source code are provided. It will cover all the basic operations needed to work with a database like creating a table, inserting data, executing a query and checking the results. This tutorial will show you how to use SQLite and Qt SQL to have a relational database in your application.
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