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Question: Use the class Invoice provided in the ex09_03 folder with this chapter's examples to create an array of Invoice objects. Use the sample data shown in Class Invoice includes four properties-a PartNumber (type int), a PartDescription (type string), a Quantity of the item being purchased (type int) and a Price (type decimal). Perform the subsequent queries on the array of Invoice objects and display the results:
1) Use LINQ to select the PartDescription and Quantity and sort the results by Quantity.
2) Use LINQ to select from each Invoice the PartDescription and the value of the Invoice (i.e., Quantity * Price). Name the calculated column InvoiceTotal. Order the results by Invoice value. [Hint: Use let to store the result of Quantity * Price in a new range variable total.]
3) Using the results of the LINQ query in Part d, select the InvoiceTotals in the range
Please show me all the work and provide me the answer.
Code SQL statements to update view as follows: change spelling of Mark Tobey to Mark Toby. Design new Transaction for Mark Toby. Suppose you have essential transaction, work, and customer data.
You must begin by understanding the different types of SQL statements. Adhere to the following deliverables for this Discussion Board.
Delete all takes tuples corresponding to any section of any course with the word “database” as a part of the title; ignore case when matching the word with the title.
Write down SQL needed to create employee table containing the following data: employeeID, text, length of 5, primary key lastName, text, length of 25
For Assignment week 1, answer the following questions. Save your answer to a word document on your desktop (please save as word 2003 format), and submit your results.
Write SQL statement which creates user defined function which returns int value. This int return value is obtained by deducting the lowest Count field value from the highest Count field value of Part table.
Oracle General SQL Exercise
Write a Select statement that returns four columns from the Invoices table, named Number, Total, Credits, and Balance
question 1 given the series rlc resonant circuit in the figure operating at variable frequency determinenbspa. the
Given R = (J,K,L ) and the set F of FDs J -> K and L -> K , show that F does NOT logically
Display all the columns from the Orders table that were paid with a Visa Card and have been shipped to the customer (hint: not a null). Order results by the Item Price in descending order.
drop the tables you are creating (in case they've already been created within the schema I'm using).
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