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1. A company wants a report containing a breakdown of payroll by department. Input, which should be stored in 3 parallel arrays, includes each employee's department number, hourly salary, and number of hours worked. The output is a list of the seven departments in the company (NOT the department number), the total gross payroll (rate times hours) for each department, and the total gross payroll for the company. Departments are listed in the table below.
Dept. Number
Dept. Name
1
Personnel
2
Marketing
3
Manufacturing
4
Computer Services
5
Sales
6
Accounting
7
Shipping
2. An instructor has 25 students. Each student is identified by a number from 1 to 35. All tests are stored in a two-dimensional array, with each column containing the grades for each test. The instructor would like to enter the student number and the test number and have the grade for that test printed. Develop pseudocode to output the needed information. (Hint: you may want to draw a picture or use a spreadsheet to get an idea of how the data is laid out).
What are the several kinds of the update operations on relations? Also explain the constraints on these update operation. Give instance in support of your answer. There are th
Problem : (b) A deductive database system is essentially the outcome of applying mathematics logic to database management, where logic is used for both data representation and
Introduction In large projects, we can have many different companies working together. Generally, the project or contract is awarded to one company (Principal Contractor), which
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The Internal or Physical Level The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is t
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What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
What is recursive closure? Why is it not possible to describe this operation in relational algebra? Recursive closure is applied to recursive relationship. An instance of rec
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
How the time stamps are implemented Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the tra
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