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Question:
Given an alphabetically sorted list of 500,000 people's names and telephone numbers, describe an algorithm that you could implement that would allow you to find a given person's telephone number in the shortest amount of time.
Comment on any changes you made to the Relational diagram before mapping the final DDL script. Discuss why you had to make these changes (1 page maximum).
Write a script that creates and calls a function named fnDiscountPrice that calculates the discount price of an item in the OrderItems table (discount amount subtracted from item price). To do that, this function should accept one parameter for th..
Write and test functions that return summation of all the numbers (items) in the list. Write a recursive function that returns the summation of all the numbers in the list.
Write your queries so that the final answers will never include duplicates, but add the keyword DISTINCT only in cases where duplicates would otherwise be produced.
Write an SQL select statement to list all double or family rooms with a price less than $255 per night in ascending order of price.
Write an SQL CREATE TABLE statement to create the PET table without referential integrity constraint on OwnerID in PET.
Write given queries in SQL and relational algebra: Determine cities from which one can fly to Toronto with one change of planes, and using same type of the aircraft for both legs of trip.
Write down SQL needed to create employee table containing the following data: employeeID, text, length of 5, primary key lastName, text, length of 25
question 1. update stock levels when the order is cancelledat times customers make mistakes in submitting their orders
Draw an Entity-Relationship Diagram (ERD) for the data storage requirements of a business described in the case study and Data Model Transformation.
Design a query to find out details of CustomerNo, first name , last name who have paid amount more than the average amount paid by all customers.
Create a table called TransactionLog. Create a trigger, which inserts a new record (user CardNo, ISBN, date) into the TransactionLog table whenever the a borrower checks out a book or returns a book.
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