Software products produced by the industry are either system software including operating systems, compilers, utilities, editors, database platforms, etc., or hardware, such as IC design, interface card design, computer systems, etc. The second industry employs both the knowledge of information technology and business administration. The platforms or instruments, such as Windows, Linux, SQL Server, JAVA, Oracle, Lotus Notes, etc., developed by the first industry are used as the foundation with the knowledge of business administration to develop and customize information systems needed, personnel and salary systems, accounting information systems, production management systems, marketing information systems, customer relationship management systems, enterprise resources planning systems for instance.