draw sequence diagram for (payment) use case in booking system

Draw the package diagram for the Online Student Registeration system   subject: SDA

can your draw a E-R diagram for each of these

How can you create a conceptual model based on ER diagrams?

Think about ER diagram for using QR code in university library system for students and librarian and reationalships

In a College, there are several departments and each department has a head of department who belongs to Faculty. Department have a name, phone extension, specific mailing address and Students that belong to the department. Students can belong to only one Department at a time and Department can have more than one or no Student Students and faculty have names and unique identification numbers, with address, age, gender and other information. Student studies different Courses offered by College. Faculty teaches these Courses. In each semester one student can take more than one course and Faculty can teach more than one courses. Faculty members can teach in multiple courses. Each course can be taught by many faculty members or no one. Faculty members are also working on multiple research projects. These projects are funded by government and college. The details of the project are name, duration and area. One project can have more than one faculty member and one faculty member can work on…

Draw the package diagram for E voting system    subject: SDA

PLEASE LABEL AND DESCRIBE DIAGRAM

Draw use case diagram for online food ordering system?