HOMEWORK 9.., Basic Computer Science

Assignment Help:
AsBased on Chapter Review Problems from the book.
1

#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?


2
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?

3
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?
question #Minimum 100 words accepted#

Related Discussions:- HOMEWORK 9..

Calculate simple interest -algorithm, Algorithm : 1. Read the values of pri...

Algorithm : 1. Read the values of principal amount, time and rate of simple interest into the locations labelled as P, T, R. 2. Set the count T to 1 implying the end of a year. 3.

Negative Messages and Blog Related Assignment, Writing Assignment 1: You...

Writing Assignment 1: Your boss wants to know about the risks of corporate blogging and recommended policies to prevent companies from liability. Write a properly informal for

Flowchart, 1. The volume of a pyramid is taken from the formula: V = 1/3 x ...

1. The volume of a pyramid is taken from the formula: V = 1/3 x AREA OF BASE x ALTITUDE Given the dimensions of a pyramid, calculate the cost of materials for making that pyrami

Data communication & net centric computing, Suppose there are exactly five ...

Suppose there are exactly five packet switches (Figure 4) between a sending host and a receiving host connected by a virtual circuit line (shown as dotted line in figure 4). The tr

#title., what is input and output device? explain meaning of input and outp...

what is input and output device? explain meaning of input and output devices

Software, Software: A computer system consists of two parts - hardware...

Software: A computer system consists of two parts - hardware and software. The first part, computer hardware, refers to all the visible components of the computer system:  key

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd