DataBase System CA Running Example G Employee Information: emp_info emp_ id emp_name∴ skill_id skill_name skill. date skill_1v1 09112 Jones 44 librarian 03-15-99 09112 Jones 26 PC-admin 06-30-98 10 09112 Jones 89 word-proc 01-1500 12 12231 Smith 26 PC-admin 04-1599 12231 Smith 39 bookkeeping 07-30-97 13597 Brown 7 statistics 09-1599 5769 14131 Blake 26 PC-admin 05-30- 14131 Blake word-proc09-30-99 10 , Haichang Gao, Software School, Xidian University 11DataBase System Haichang Gao , Software School , Xidian University 11  Employee Information: A Running Example