CREATE TABLE lti2_tool (
  tool_pk int(11) NOT NULL AUTO_INCREMENT,
  name varchar(50) NOT NULL,
  consumer_key varchar(255) DEFAULT NULL,
  secret varchar(1024) DEFAULT NULL,
  message_url varchar(255) DEFAULT NULL,
  initiate_login_url varchar(255) DEFAULT NULL,
  redirection_uris text DEFAULT NULL,
  public_key text DEFAULT NULL,
  lti_version varchar(10) DEFAULT NULL,
  signature_method varchar(15) DEFAULT NULL,
  settings text DEFAULT NULL,
  enabled tinyint(1) NOT NULL,
  enable_from datetime DEFAULT NULL,
  enable_until datetime DEFAULT NULL,
  last_access date DEFAULT NULL,
  created datetime NOT NULL,
  updated datetime NOT NULL,
  PRIMARY KEY (tool_pk)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE lti2_tool
  ADD UNIQUE INDEX lti2_tool_initiate_login_url_UNIQUE (initiate_login_url ASC);