C++ SQLite

Introduction to SQLite in C++

SQLite is a lightweight, disk-based database that doesn’t require a separate server process. It allows for easy integration with C++ applications through the use of the sqlite3 library. This makes it ideal for developing applications that require a simple, self-contained, and fast database engine.

Setting Up SQLite in C++

To start using SQLite in your C++ application, you need to include the sqlite3 library. This library provides the functions and structures necessary to interact with SQLite databases.

Make sure to link the SQLite library when compiling your C++ program. You can download the SQLite amalgamation source code from the official SQLite website and compile it along with your application.

Creating and Connecting to a Database

To create or connect to an SQLite database, use the sqlite3_open() function. This function opens a new database connection and creates a database file if it does not exist.

Executing SQL Commands

Once connected, you can execute SQL commands using the sqlite3_exec() function. This function allows you to run SQL statements directly on the database.

Inserting Data into the Database

You can insert data into your tables using SQL INSERT INTO statements executed with sqlite3_exec().

Querying Data from the Database

To query data, use the sqlite3_exec() function with a SELECT statement. You may also provide a callback function to handle the data retrieved.

Here, the callback function is a user-defined function that processes each row of result data. Define it as follows:

Closing the Database Connection

After completing operations on the database, it is important to close the database connection to free up resources.