Here are some tips and best practices to keep in mind when creating ER diagrams:
By working through structured exercises, you learn to avoid these traps. A quality provides immediate feedback, allowing you to compare your solution with a professional standard. entity-relationship diagram exercises and answers pdf
A university wants to track students and the courses they enroll in. A student has a unique Student ID, Name, and Major. A course has a unique Course Code, Title, and Credits. A student can enroll in many courses, and a course can have many students. Here are some tips and best practices to
% Works-in (1 to many) \draw (dept) -- node[right] 1 ++(2,0) -- node[above] works-in ++(0,-1.5) -- node[left] M (emp); A student has a unique Student ID, Name, and Major
% Better to use explicit relationship diamond for clarity \endtikzpicture \endfigure \noindent Alternative clear diagram: \beginfigure[H] \centering \begintikzpicture \node[rectangle, draw] (dept) DEPARTMENT; \node[rectangle, draw, below=2cm of dept] (emp) EMPLOYEE; \node[diamond, draw, left=1cm of dept] (works) WORKS\_IN; \node[diamond, draw, right=1cm of dept] (manages) MANAGES;