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1.When would you choose to implement distributed databases, rather than local databases? Would you go for this design if all your computers were localized in one building? What if they are spread out in your country? What would you recommend when they are spread worldwide? When would you mirror databases and when would you use databases tailored for the local environment? 2. Design a hashed file of words that could be used as a spell checker. What would you use as a hash function? Would your choice of a hash function depend on the language from which the words are chosen? Why should such a file not be stored as a sequential file? 3. Based on Chapter Review Problems from the book. #1. What is meant by data independence? Explain your answer. #2. Identify two benefits of separating application software from the database management system. #3. Design a relational database containing information about music composers, their lives, and their compositions. (Avoid redundancies similar to those in Figure 9.4) #4. Suppose a sequential file contains 50,000 records, and 5 milliseconds are required to interrogate an entry. How long should we expect to wait when retrieving a record from the middle of the file? #5. The chapter drew parallels between a traditional file index and the file directory system maintained by an operating system. In what ways does an operating system's file directory differ from a traditional index?
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The length of the string is shortened by 5cm and the time is measured. Determine the independent variable? Determine the dependent variable? What must the controlled variables be?
when the user clicks mix button,the form's background should change to the color that you get when you mix the two selected primary colors. note: i want the solution in visual c# not in c++ plz
What are the things you should consider in making this decision, and based on your choice, what would be your follow-up actions?
How many rows will a Truth Table require if there are six variables and three conditions of each variable? Defend your answer.
Write a Java application which tests the random number generation abilities of Java. Random number generation is explained below.Your application should simulate rolling a pair of dice some number of times.
Express the angle with respect to the tangential velocity vector (ie, +90° points radially out). (Points : 5) A) 10.9 m/s2 at -75° B) 10.9 m/s2 at +75° C) 37.9 m/s2 at -75° D) 37.9 m/s2 at +75°
Can you suggest a way to roughly find out the web servers (outside your department) which are not popular among the users in the department? Describe.
What is infrastructure? In what was do hardware and system software qualify as infrastructure? What basic strategic planning questions should be addressed with respect to infrastructure?
Please discuss some options for mobile wireless internet connection, and describe the types of hardware that would be involved in making such a connection
Draw a flow chart, hierarchy chart, and write pseudocode for the following problem. • A weather sensing system calculates & prints a report on the following: ? Average temperature ? Highest temperature ? Lowest temperature ?
Could any of the technologies (Ethernet, token ring, fast Ethernet, 100VG-AnyLAN or gigabit Ethernet) improve your current network's performance?
Explain the roles of computer forensics expert and computer security expert. You should include the following: Which specific positions (job titles) are in demand within business organizations?
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