Working knowledge and understanding of: structured coding and analysis; application development products; specific programming techniques and languages such as COBOL, C/C++, SQL, and Visual Basic; principles, methods, and techniques of systems analysis; data representation, data types, data structures, and algorithms; methods to analyze and recommend business solutions to meet customer needs and requirements; operation and application of relational database and file management systems. Knowledge and understanding of: the inter-relationship of mainframe, PC, LAN, Network and telecommunications systems including hardware components, software applications, operating systems, and documentation; database design; computer operations, including operating systems and software products; principles of data security; methods and techniques of providing support to users; methods and techniques of troubleshooting software and inter-connectivity problems.