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The natural outer-join operations extend the natural-join operation so that tuples from the participating relations are not lost in the result of the join. Describe how the theta-join operation can be extended so that tuples from the left, right, or both relations are not lost from the result of a theta join.
Technological convergence
What role does relational calculus (or relational algebra) play in query optimization in a centralized relational database?
One way to provide additional revenues for the RBOCs in the MFJ was to retain control of the Yellow Pages.
Automate the entry and updating of routing information, but you are concerned about excessive memory and processor utilization if you implement dynamic routing protocols.
What is three-way handshake? Draw a diagram showing how a TCP connection is established through three-way handshake.
Identify the hardware you have on your computer and catagorize each piece as input, output, or both. (2) List at least five different pieces of hardware with at least one of each category.
A small midwest town has two burger restaurants located across the street from each other: 'Burgerama' and 'The Burger Brothers'. As both restaurants compete for the same customers, they are both considering offering a larger burger with more topping..
Periodic backups will be made of server hard drives and stored offsite in a secure location such as a safety deposit box. Access to the backups will be shared.
Alice and Bob are experimenting with CSMA using walsh table. Alice uses the code[+1,+1] and Bob uses the code[+1,-1]. Assume that they simultaneously send a hexadecimal digit to each other.
The case study focuses on a major IT security breach that occurred in the recent past. Consider yourself as the IT person in charge at TJX. You need to analyze the case and describe the impacts of the breach on TJX.
Develop sequence diagrams for the use cases Enter New Order, Create Case Manifest and Record Order Fulfillment . Update the design class diagram with attribute information and method signatures derived from the sequence diagrams.
Write a program that reads in an integer and breaks it into a sequence of individual digits in reverse order. For example, the input 16384 is displayed as 4 8 3 6 1 You may assume that the input has no more than five digits and is not negative.
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