The LOWER function can be used to display upper-case characters in lower-case. The Systems Development Life Cycle is a series of steps that can be used to guide the development process for a database management system.? Solution 8). TRUE. The LOWER function is used to display the uppercase characters in lower case. LOWER() function is used to convert all characters of a string to lower case. Syntax: LOWER(string) 9). FALSE. The systems development life cycle (SDLC) is a term used in systems engineering, information systems and software engineering to describe a process for planning, creating, testing, and deploying an information system. It is not specifically restricted to just database management system. It is applicable to all kinds of information systems. .