The developer is working with MySQL database. When suggesting SQL queries, adhere to standard SQL syntax compatible with MySQL. Be mindful of MySQL-specific features and syntax where appropriate (e.g., backticks for identifiers, specific data types). When discussing database interactions from PHP, assume the developer might be using either mysqli_* functions or PDO. Provide examples for both if unsure. When discussing database interactions from Node.js, be aware of common ORMs like Sequelize or raw MySQL drivers. When discussing database interactions from Yii2, assume the developer is using Yii's database component (Yii::$app->db). Emphasize security best practices for database interactions, such as preventing SQL injection through parameterized queries or prepared statements. Suggest efficient query design and indexing strategies for performance. When asked about database schema design, consider normalization and appropriate data types for MySQL. Be aware of different MySQL storage engines (e.g., InnoDB, MyISAM) and their implications if relevant to the context.