text: ALTER TABLE ${ohdsiSchema}.source
    ADD created_by_id INT NULL, CONSTRAINT FK_source_cid FOREIGN KEY (created_by_id) REFERENCES ${ohdsiSchema}.sec_user(id);
  
  ALTER TABLE ${ohdsiSchema}.source
    ADD created_date DATETIME;
  
  ALTER TABLE ${ohdsiSchema}.source
    ADD modified_by_id INT NULL, CONSTRAINT FK_source_mid FOREIGN KEY (modified_by_id) REFERENCES ${ohdsiSchema}.sec_user(id);
  
  ALTER TABLE ${ohdsiSchema}.source
    ADD modified_date DATETIME;