I work as a personnel recruitment specialist in our company, and our company also keeps the resumes of interviewed candidates. The main purpose is to establish a talent pool, and input the names and contact numbers of qualified candidates (who can't be hired this time because of the limited number of people) into the computer (we don't input ID cards and academic information into the computer here, but the information will be sold as waste paper or broken by a shredder after input). In case the company is in a hurry to recruit personnel (for example, an employee has to resign urgently and needs to be replaced immediately), it will have the opportunity to contact an applicant as soon as possible and invite him to work as long as he has not found a job. This is basically the case, the code word is not easy, hope to adopt my answer.