A database is to be designed for a college to monitor students' progress throughout their course of study. The students are reading for a degree $($such as Diploman, Advance Diploma, Bachelors, Masters, etc$)$ within the framework of the modular system. The college provides a number of module, each being characterised by its code $,$ title, credit value, module leader, teaching staff and the department they come from. A module is co$-$ordinated by a module leader who shares teaching duties with one or more lecturers. A lecturer may teach $($and be a module leader for$)$ more than one module. Students are free to choose any module they wish but the following rules must be observed: some modules require pre$-$requisites modules and some degree programmes have compulsory modules. The database is also to contain some information about students including their numbers, names, addresses, degrees they read for, and their past performance $($i$.$e$.$ modules taken and examination results$).$Draw E$/$R digram with degree of relationship, mandatory and optional.