The parser needs to be able to take new job ads from the directory specified in the IMPORT_FILE_PATH in import_settings.cfg, parse them, and update corresponding rows in the database. When it encounters a skill_term that's already in the skill_post_counters table, it needs to update number_of_postings for that skill_term. And for each secondary term it needs to update the number_of_times field in the corresponding row in the skill_pairs table.