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Question: Assume a direct access file consists of sectors with 1024 byte capacity. Assume also that records are thirty-two bytes long. On which logical sector do the following logical records lie? What is the relative record number in the sector?
Logical record 42Logical record 131Logical record 32Logical record 512
For instance, the constraints x1 = x2, x2 = x3, x3 = x4, and x1 6= x4 cannot be satis fied. Give an efficient algorithm that takes as input m constraints over n variables and decides whether the constraints can be satis fied.
Clustering is generally used along with classification in some applications. In such a case, typically clustering is applied to a dataset to recognize natural grouping of the objects in the dataset,
Discuss how you would design a database to keep track of all students at a university. Explain tables, Primary Keys, Foreign Keys, relationships, attributes, Candidate Keys.
Generalize the 2-3 algorithms for INSERT and DELETE to K-J trees, where non-leaf vertices have between K and J children for fixed integers K >=2, and J>= 2K-1.
For RSA signature, let p=17 and q=43. Design a digital signature for the message m=161, where the hashing function is the identity function and the computation at the signer's side is performed through the Chinese Remainder Theory.
What factors and principles should the federal government take into account when considering indecency regulation issues?
Which of the system changeover methods is the most expensive? Why? Which of the system changeover methods is the most risky? Why?
Consider a simple symmetric encryption algorithm as follows:Is it a problem if the first block of input happens to be the same as the key? Explain why?
Suppose that the symbols are compressed using Huffman Coding and that the most likely symbol is encoded as a 0, determine the decompressed value of the following compressed string of bits?
Think about a typical sales invoice that would include the given information. Create a single table to hold all of the information needed to store an invoice including this information.
Nazca Cinemas is a tiny movie theater that would like you to create a movie scheduling database system for them. The theater has 4-screens. Each screens has its own unique ID
Suppose you need to sort a relation of 40 gigabytes, with 4 kilobyte blocks, using a memory size of 40 megabytes. Find the cost of sorting the relation, in seconds, with bb = 1 and with bb = 100.
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