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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).
Differentiate between Primary and secondary storage? Primary and secondary storage - Primary storage device stores the data temporarily. Primary storage is commonly used thro
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
What is Message switching Message switching transmits data units which can be arbitrarily long. Packet switching has a utmost packet size, if any message longer than that, it s
what are the limitations of dbms?
Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher
domain
Northwind Pty Ltd sells a variety of food products throughout the world. They want to use the reporting features of SAP''s Business Information Warehouse to better understand thei
Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
For every n-ary relationship type R where n>2, we make a new table S to represent R. We contain as foreign key attributes in s the primary keys of the relations that show the parti
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