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# Answer all; Employee Information System comsats hires many...

Employee Information System

comsats hires many employees where each employee belongs to only one department at a time. once an employee is hired, then the name of employee, his designation, salary, allocated department and qualifications (degree, passing year and university) are noted. an employee may have many qualifications. each employee is assigned an employee code for identification purpose. an employee gets promotion to next higher designation when his service period reaches a certain limit. for example, a lecturer gets promotion to assistant professor on the completion of five years job experience. on the other hand, an employee can switch to other department at the same or different designation. for example, an employee working as lab engineer can switch from department of computer science to department of electrical engineering. similarly, an employee who resigned from one job can work on similar designation in same or other department. for example, a lab engineer in department of computer science can switch job to web developer. comsats is interested to know how long an employee offered his services at a certain designation. for example, an employee who was hired as lecturer got promoted to assistant professor after serving for five years. so comsats is interested to know how long he served as lecturer and assistant professor? what was his starting and last salary at both designations?

create ER diagram to model employee information

convert the ER diagram into relational model

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Question 17 Which one of following choices handles if an exception occurs at following line: int a = input.nextint(); Your answer: int a = input.nextint; O handle (InputMismatchException e] { System.er.printIn(&quot;exception has been handled&quot;); try { int a = input.nextInt(); O catch [Exception e] { System.er.printIn(&quot;exception has been handled&quot;); int a = input.nextInt; O iffInputMismatchException = = true}{ System.er.printIn[&quot;exception has been handled&quot;); try { int a = input.nextInt(); O catch [Exception e = = true] { System.er.printIn(&quot;exception has been handled&quot;);

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Question 15 Which is the correct sequence of an exception flow? i. Exception object is created. ii. Statement execution encounters an error. iii. except block handles exception iv. Execution flows to finally block i, ii, iv and iii ii, i, iii and iv i, ii, iii and iv ii, I, iv and iii

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Question 2. A merchant has a collection of goods. Help him write a ﬂinction named compute_unit_prices. This function takes in two input. The first input is a dictionary with name of the goods as keys and a list of bulk prices and bulk quantity as value. {See example) The second input is a list of goods' names. The function should return a dictionary. The dictionary shall contain the unit prices with the name of goods as keys and the unit prices as values. The unit price is deﬁned by the bulk price divided by the bulk quantity. Using try and except blocks, should the names in the second input cannot be found in the ﬁrst, the good's unit price should be a None object, should the unit price cannot be obtained due to a ZeroDiyisionError, the unit price should he -1. Using if else blocks will result in 0 marks for this question. If any other errors are raised, the function should return an empty dictionary

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Question 3 (20 points) d Which one of the following statements is correct? The first catch block following a try block will handle the exception. The last catch block following a try block will handle the exception. O The first catch block following a try block that can handle the thrown object will handle the exception. )As long as there is a catch block, the exception will be handle. Save

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