Do you have experience with controlling and coordinating transactional operations in databases?

Yes, I have experience with controlling and coordinating transactional operations in databases. Specifically, I have used ACID transaction mechanisms to ensure data integrity when performing multiple related operations.

In C/C++, this is usually implemented through database API calls (for example, via ODBC, libpq for PostgreSQL, or MySQL Connector), where a transaction begins with the command BEGIN or START TRANSACTION, then the necessary operations are performed, and upon success, COMMIT is called, while in case of errors, ROLLBACK is executed.

An example of simplified C++ code using transactions:

// Start of transaction
executeSQL("BEGIN");

try {
    executeSQL("INSERT INTO table1 ...");
    executeSQL("UPDATE table2 ...");
    // If everything is successful
    executeSQL("COMMIT");
} catch (...) {
    // On error, rollback
    executeSQL("ROLLBACK");
}

This approach guarantees that either all operations are applied or none, preventing data inconsistency.