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Database management system, Exams of Database Management Systems (DBMS)

Shree Somnath Sanskrit UniversityDatabase Management Systems (DBMS)
Prof. Kamal Magdom

Database management system (DBMS)

Typology: Exams

2025/2026

Uploaded on 11/12/2025

raiyan-chougle
raiyan-chougle 🇮🇳

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DBMS Question Bank SE-III(Unit-2,4,5)
1. ER diagram for Hospital Management System is given And map it into relational model.
2. ER diagram for Online Sales System is given. And map it into relational model.
3. ER diagram for company database is given. And map it into relational model.
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DBMS Question Bank SE-III(Unit-2,4,5)

  1. ER diagram for Hospital Management System is given And map it into relational model.
  2. ER diagram for Online Sales System is given. And map it into relational model.
  3. ER diagram for company database is given. And map it into relational model.
  1. ER diagram for Blood Bank System is given. And map it into relational model.
  2. ER diagram for Bank System is given. And map it into relational model.
  3. ER diagram for Library Management System is given. And map it into relational model.

b) Find all employees who joined in the month of October. c) Give all employees of „ABC Corporation‟ a 10% raise. d) Find all employees in the database who live in the same cities as the companies for which they work e) Find all employees who earn more than average salary of all employees of their company

  1. Consider the following relational table Person(pname, street,city) Works_for(pname,cname,salary) Company (cname,city) Manages (pname,mname) Find the street & city of all employees who work for “IDEA”, live in Pune and earn more than Rs. 3000.
  2. Consider the following employees database,primary keys are underlines: Employee(employee_name, street, city) Works(employee_name,cname,salary) Company(cname,city) Manages(employee_name,manages_name) Give an expression in relational algebra for each od the following queries: A)Find the names of all employees who work for First Bank Corporation. B) Find the names and Cities of residence of all employees who works for First Bank Corporation C) Find the names,street addresses and cities of residences of all employees who work for First Bank Corporation ans earn more than $50,
  3. What is key? Explain types of key with eg
  4. Explain the aggregate function
  5. create following table

a. Display All Records b. Display specific Columns name,course c. Display the record who student select subject mathematics d. update student course Data Science where student_id= e. update age = 23, course = 'Statistics' where name= ‘Amit’ f. Delete Students detail WHERE student_id = 2;

  1. create following table

a. Display all records b. updates Rohit Sharma’s salary to 58000. c. deletes Priya Mehta’s record. d. changes Amit Kumar’s department from Finance → Operations. e. To display Final Table After All above mentioned Operations performed: