James A.O'Brien Introduction to Information Systems Eleventh Edition 15 Chapter Summary(cont) Database management systems are software packages that simplify the creation,use,and maintenance of databases. Several types of databases are used by organizations including operational, distributed,external,data warehouses and data marts. Database development for large corporate databases requires a top-down planning effort involving planning,requirements specification and logical and physical design.James A. O’Brien Introduction to Information Systems Eleventh Edition 15 • Database management systems are software packages that simplify the creation, use, and maintenance of databases. • Several types of databases are used by organizations including operational, distributed, external, data warehouses and data marts. • Database development for large corporate databases requires a top-down planning effort involving planning, requirements specification and logical and physical design. Chapter Summary (cont)