CREATE TABLE IF NOT EXISTS ec2_package (
    aws_instance_id VARCHAR(255) NOT NULL,
    package_name VARCHAR(100) NOT NULL,
    package_version VARCHAR(50) NOT NULL,
    FOREIGN KEY (aws_instance_id)
      REFERENCES ec2(aws_instance_id)
      ON DELETE CASCADE,
    FOREIGN KEY (package_name, package_version)
      REFERENCES package(package_name, package_version)
      ON DELETE CASCADE
)