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Question 1 .Describe a specific scenario, situation, or application where using a foreign key would be necessary.
Question 2. Explain your reasons, including the characteristics of the data, that necessitate the foreign key.
Question 3. Explain an application requirement that would necessitate the use of a view.
Question 4. Suggest three DDL and three DML commands that you believe are most important, and provide an example of their use.
Question 5. Explain what each DDL and DML command does for each SQL statement that you have suggested.
I'm not really sure how to answer these questions. There are five questions.
Design a query that will allow the finance department to determine the commissions paid to specific employees of the sales department for the month of December.
Write a command that will remove the Jones that lives in Orange from the Customer table .Write the SQL DDL to create the database that contains each of the relations shown in the above ERD.
Given R = (J,K,L ) and the set F of FDs J -> K and L -> K , show that F does NOT logically
Calculate the Tax on an Order, Calculate the Total Shopper Spending - Develop a SELECT statement using the BB_SHOPPER table to produce a list of each shopper in the database and his or her respective totals.
Turn this SQL query into a relational algebra statement? SELECT Request.reqfor, Ordering.invamt, Ordering.invnbr, Ordering.invdat
Write a Java application that inputs three integers from the user and displays the sum, average, product, smallest and largest of the numbers.
Write a script that uses two variables to store (1) the count of all of the products in the Products table and (2) the average list price for those products. If the product count is greater than or equal to
Create and submit a screenshot of your database diagram based on the tables, and generate the data definition language (DDL) for each table.
How to write a program in towers of hanoi using pl/sql language
Write SELECT statement which returns those rows with the balance due greater than 1000. Sort result set by InvoiceTotal, with largest invoice first.
Use the data on the Christensen worksheet in the range A1:J19 to create a PivotChart on a new sheet. Use the Type, Issue Price, and Est. Value fields and the default locations. Find the average issue price and average estimated value.
Write a SELECT statement that returns these columns from the Products table: The date_added column A column that uses the CAST function to return the date_added column with its date only (year, month, and day)
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