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Write a PL/SQL block and declare a variable v_sal of the type NUMBER. Include the following statement in the Execution section:
SELECT MAX(salary)
INTO v_sal
FROM employees;
Display the maximum salary in the Employees table.
Submit the code of the PL/SQL block.
database systems1. what is an sql injection attack? explain how it works and what precautions must be taken to prevent
Write a function, called ‘binarySearch', implements a binary search. This function should take three parameters.
Turn this SQL query into a relational algebra statement? SELECT Request.reqfor, Ordering.invamt, Ordering.invnbr, Ordering.invdat
Get the movie title for all movies that are comedy or horror, rename the output attribute name to be "Happily Scared"
Write SQL SELECT statements to retrieve the following information from the prime_minister database.
Create a view so that supplier 'ASP' can only see his information from the l_foods table. Call this view_l_foods_ASP. Show columns supplier_id, product_code, menu_item, description, and price in your view.
Write summary query which uses CUBE operator to return LineItemSum (which is the sum of InvoiceLineItemAmount) group by Account(an alias for AccountDesciption).
Create a text file called YourStudentId-Create.sql (format xxxxxxx-Create.sql) for example 2225991- Create.sql that will.
Write a PL/SQL block that displays the last name and salary of the following people. Each of these can be done separately as PL/SQL, first to test and get the output lines then encapsulated.
Create a database model and Submit the table creation statements for the Database Model.
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.
Indicate the changes (using the shorthand representation) that you would need to make to the original Premiere Products database design to support the following requirements. There is no relationship between customers and sales reps. When a custo..
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