Write a java program to demonstrate interthread communications.

Write a java program to demonstrate interthread communications.

Write java programs to demonstrate use of abstract class and interface. Make necessary assumptions.

 Write a program to demonstrate use of different data types in Java.

Find total number of employees working in the company in May 2025.

Find average salary of employees in July 2025 for maintenance department

Find the sum of net salary paid to all the employees

 List engineers with net salary > ₹75,000 in August 2025

Find employees who were absent between June 10, 2025 and Jule 15, 2025

Count the number of employees in each department

Show employees whose tax deductions exceed ₹20,000 in July 2025

Show average allowances per employee for July 2025

 Find top 5 highest paid employee (highest basic salary) in August 2025

Get employee names along with their basic salary and employee type

Show the June 2025 salary details of all employees who are working in Maintenance Department

List all permanent employees with their department name

Implement the database design (create tables) that you have created in question 1 using a RDBMS with proper integrity constraints. Enter about 8-10 meaningful records in each of your table.

List the entities, their attributes and relationships for the description given above and make an ER-diagram for this Payroll Management System. You may use the concept of keys, aggregation, generalization, cardinality etc. as per need. Design the suitable RDBMS tables for the ER-diagram you have created. The database design should include keys, foreign keys, constraints and referential integrity constraints. Your database design should be normalized up to 3rd Normal Form. Make necessary assumptions wherever require.

List the entities, their attributes and relationships for the description given above and make an ER-diagram for this Payroll Management System. You may use the concept of keys, aggregation, generalization, cardinality etc. as per need. Design the suitable RDBMS tables for the ER-diagram you have created. The database design should include keys, foreign keys, constraints and referential integrity constraints. Your database design should be normalized up to 3rd Normal Form. Make necessary assumptions wherever require.

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