text: USE backoffice
  IF (NOT EXISTS(SELECT *
                 FROM INFORMATION_SCHEMA.TABLES
                 WHERE TABLE_SCHEMA = 'dbo'
                   AND TABLE_NAME = 'courses'))
      BEGIN
          CREATE TABLE courses
          (
              [id]       CHAR(36)     NOT NULL,
              [name]     VARCHAR(255) NOT NULL,
              [duration] VARCHAR(255) NOT NULL,
              PRIMARY KEY ([id])
          );
      END
  