DB Browser for SQLite Attach Database: A Step-by-Step Guide

When it comes to managing and securing databases, attaching a database to an encrypted SQLCipher database is a crucial step. In this article, we will explore how to export data from a plain SQLite database to an encrypted SQLCipher database with a specified number of KDF iterations.

Prerequisites

Before starting the process, make sure you have an empty encrypted database created and attached to the plain database using the following code:

`QString dbPathNameEnc = 'databases/en.db';`

This will enable us to proceed with the encryption and attachment of the database.

Step 1: Create a QSqlDatabase Object

Create a QSqlDatabase object that represents the connection to the encrypted SQLCipher database. This can be done using the following code:

`QSqlDatabase encryptedDb = QSqlDatabase::addDatabase('SQLITECIPHER', 'en');`

Step 2: Attach the Plain Database to the Encrypted Database

Attach the plain SQLite database to the encrypted SQLCipher database using the `ATTACH DATABASE` command. This can be done using the following code:

`QSqlQuery attachQuery(QSqlDatabase::database(currentUser));`

`If (!attachQuery.exec('ATTACH DATABASE '' + dbPathNameEnc + '' AS en KEY '' + password + '' '))`

Step 3: Export Data from the Plain Database

Export data from the plain SQLite database to the encrypted SQLCipher database using the `SELECT sqlcipher_export` command. This can be done using the following code:

`QSqlQuery exportQuery(QSqlDatabase::database(currentUser));`

`If (!exportQuery.exec('SELECT sqlcipher_export('en')'))`

Step 4: Close the Normal Database

Close the normal SQLite database to ensure that the encryption and attachment process is complete. This can be done using the following code:

`QSqlDatabase::close();`

By following these steps, you can successfully export data from a plain SQLite database to an encrypted SQLCipher database with a specified number of KDF iterations.

In this article, we have explored how to attach a plain SQLite database to an encrypted SQLCipher database using the `ATTACH DATABASE` command and export data using the `SELECT sqlcipher_export` command. This process ensures that your database is secure and protected from unauthorized access.

If you have any questions or need further clarification on this topic, feel free to ask in the comments section below.

Db browser for sqlite attach database