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SQL provides an n-ary operation called coalesce, which is defined as follows: coalesce(A1, A2,..., An) returns the first nonnull Ai in the list A1, A2,..., An, and returns null if all of A1, A2,..., An are null.
Let a and b be relations with the schemas A(name, address, title), and B(name, address, salary), respectively. Show how to express a natural full outer join b using the full outer-join operation with an on condition and the coalesce operation. Make sure that the result relation does not contain two copies of the attributes name and address, and that the solution is correct even if some tuples in a and b have null values for attributes name or address.
Which command will create a hard link called FILE3.TXT that is linked to the content of an original file called FILE1.TXT
An insurance company has asked your digital forensics firm to review a case for an arson investigation. The suspected arsonist has already been arrested, but the insurance company wants to determine whether there's any contributory negli- gence on th..
Description/Requirements:Develop a web application using KRL and the Live web.
ee attachment for the menu items from the restaurant, as well as the nutritional data for each menu item and the Recommended daily Value from FDA, as well as price of each menu item. Solution should determine total quantities of each food for the ..
How AES achieves confusion and diffusion. The degree to which you think AES is susceptible to each of the following attacks, a. Brute Force, b. Birthday attack, c. Timing attack, d. Algebraic attack.
Your company has just hired a new CEO, and you make an appointment with her to discuss a large financial project that you have been managing.
What are current artificial artificial intelligent application and what logic has used to make this, is typical algorithms are reason for artificial intelligent ?
Credit-card information was compromised by an attack that infiltrated the network through a vulnerable wireless connection within the organization. The other breach was an inside job where personal data was stolen because of weak access-control po..
Every runner is required to solicit sponsors to help raise money for the event. There are two types of sponsors - corporate and personal.Design a second table that will store data about the sponsors for each runner.1.Make a list of the field names an..
Design a structure stack that represents a stack of elements of some arbitrary type. Include the functions: create(returns an empty stack), push(add an element to the top of the stack and return the resulting stack)
What client-server technology was used to create the webpage.
Do you believe that training is a necessity in the implementation of new policies
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