How can I secure my SQL database in a Node.js application?

How can I secure my SQL database in a Node.js application?

To secure your SQL database in a Node.js application, you should use parameterized queries to prevent SQL injection, implement proper authentication and authorization, and ensure that your database credentials are stored securely.

What are parameterized queries and how do they work?

Parameterized queries are a way to execute SQL statements where the parameters are sent separately from the SQL code. This prevents attackers from injecting malicious SQL code.

Can you give me an example of a parameterized query in Node.js?

Sure! Here's an example using the 'mysql' package:

const mysql = require('mysql');
const connection = mysql.createConnection({ /* your config */ });

const userId = 1;
connection.query('SELECT * FROM users WHERE id = ?', [userId], (error, results) => {
  if (error) throw error;
  console.log(results);
});

What other security measures should I consider?

In addition to parameterized queries, consider using SSL/TLS for database connections, regularly updating your database software, and implementing role-based access control.