const cfnDBParameterGroup = new CfnDBParameterGroup(
      this,
      `MyParameterGroup`,
      {
        description: 'Intended to store IBM DB2 Licence',
        family: 'db2-se-11.5', // Full list with: aws rds describe-db-engine-versions --query "DBEngineVersions[].DBParameterGroupFamily" --engine db2-se
        dbParameterGroupName: `db-param-group-db2-ibm-licence`,
        parameters: {
          ['rds.ibm_customer_id']: 'YOUR_IBM_CUSTOMER_ID',
          ['rds.ibm_site_id']: 'YOUR_IBM_SITE_ID'
        }
      }
    );

const databaseInstance = new CfnDBInstance(this, `${id}Db2Instance`, {
      dbInstanceClass: 'db.m6i.large', // Minimal instance class for DB2 in AWS console
      engine: 'db2-se',
      engineVersion: '11.5',
      licenseModel: LicenseModel.BRING_YOUR_OWN_LICENSE,
      dbParameterGroupName: cfnDBParameterGroup.dbParameterGroupName,
      // ... other attributes (vpc, storage, dbName, master username/password...)
});