The emails table should capture data specific to each email sent as part of a campaign, including email ID, campaign ID (foreign key), subject, body content, and send date. An example schema might be:
sql CREATE TABLE emails ( email_id INT PRIMARY KEY AUTO_INCREMENT, campaign_id INT, subject VARCHAR(255) NOT NULL, body TEXT NOT NULL, send_date TIMESTAMP, FOREIGN KEY (campaign_id) REFERENCES campaigns(campaign_id) );