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..

The internet or the world wide web, The internet or the World Wide Web is ...

The internet or the World Wide Web is the most familiar and popular example. These databases hold vast amounts of information, for example, on companies. By obtaining details in t

Define internet and explain its working, Question 1 Define Internet and ex...

Question 1 Define Internet and explain its working Question 2 Explain page format specifiers and page content specifiers of XSL-FO Question 3 Write a note on HTML

Basic syntax of python language, The Python language has a lot of similarit...

The Python language has a lot of similarities to Perl, C and Java. Though, there are some specific differences between the languages. First Python Program: relative Mode Programmin

Networking.., write advantages and disadvantages of private and public netw...

write advantages and disadvantages of private and public network

Protocol, what protocol is used by DNS name server

what protocol is used by DNS name server

Introduction to microprocessor, The microprocessor is at times referred to ...

The microprocessor is at times referred to as the ''brain'' of the personal computer, and is responsible for the processing of the instructions which creates computer software. It

Elements of programming language, ELEMENTS OF PROGRAMMING LANGUAGE:  L...

ELEMENTS OF PROGRAMMING LANGUAGE:  Learning a programming language requires understanding of concepts such as representation of different types of data in the computer, the va

Compiler, Compiler A compiler is a special program which transla...

Compiler A compiler is a special program which translates programs written in high level language into machine language. The original program is called the source progra

Ultrasonic waves, Ultrasonic Waves: Sound waves outside the audible range o...

Ultrasonic Waves: Sound waves outside the audible range of humans. Ultrasonic waves consist of frequencies greater than 20 kHz and exist in excess of 25 MHz. Applications include i

Digital wireless telephone networks, Mobile telephone networks started with...

Mobile telephone networks started with analog technology. Analog cellular networks were known as first generation (1G) networks. Such networks had limited capacity, and were subjec

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