Hi, I've been to a lot of web links to learn how to draw components and sequence diagrams, any examples on how do i draw them when designing a billing software accessed by a single user only. the user is able to - list current users - list payments - process payments - view payments paid - view outstanding payments etc. Next, are there any examples anywhere and guide for - Type, signature and visibility - Mapping patterns to code - Mapping association to collection - Mapping class model to database schema    More>>