Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Expert Solution & Answer
Chapter 9, Problem 10PE
Explanation of Solution
Explanation:
- When the whole
database is encrypted, it is typically easy and simple for the database to do decryption since data is obtained from the disk to the main memory.- Thus, in memory, storage is typically unencrypted.
- With the above solution, the entire database including indices is usually encrypted on the disk; however, typically unencrypted in the main memory...
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Refer to page 10 for problems on parsing.
Instructions:
•
Design a top-down parser for the given grammar (e.g., recursive descent or LL(1)).
• Compute the FIRST and FOLLOW sets and construct the parsing table if applicable.
• Parse a sample input string and explain the derivation step-by-step.
Link: [https://drive.google.com/file/d/1wKSrun-GlxirS31Z9qoHazb9tC440 AZF/view?usp=sharing]
Refer to page 20 for problems related to finite automata.
Instructions:
•
Design a deterministic finite automaton (DFA) or nondeterministic finite automaton (NFA) for the
given language.
• Minimize the DFA and show all steps, including state merging.
•
Verify that the automaton accepts the correct language by testing with sample strings.
Link: [https://drive.google.com/file/d/1wKSrun-GlxirS31Z9qo Hazb9tC440AZF/view?usp=sharing]
Refer to page 60 for solving the Knapsack problem using dynamic programming.
Instructions:
•
Implement the dynamic programming approach for the 0/1 Knapsack problem.
Clearly define the recurrence relation and show the construction of the DP table.
Verify your solution by tracing the selected items for a given weight limit.
Link: [https://drive.google.com/file/d/1wKSrun-GlxirS3IZ9qoHazb9tC440AZF/view?usp=sharing]
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