Multi-valued attribute dbms, computer science, Basic Computer Science

Multi-valued Attribute DBMS
Each multi valued attribute maps into a separate table.
Include also an attribute for the primary key of the entity and relationship type which the attribute belongs to.
The relvar has an attribute for each simple attribute of the multi valued attribute.
This is also a foreign key.
The primary key of this relvar is the combination of all the attributes if the multi valued attribute is simple.
If the multi-valued attribute is composite, the primary key of this relvar may be a combination of some of the attributes.
Posted Date: 2/14/2012 10:06:08 PM | Location : United States







Related Discussions:- Multi-valued attribute dbms, computer science, Assignment Help, Ask Question on Multi-valued attribute dbms, computer science, Get Answer, Expert's Help, Multi-valued attribute dbms, computer science Discussions

Write discussion on Multi-valued attribute dbms, computer science
Your posts are moderated
Related Questions

An array A is said to be special if all its elements are same. Given an array, your task is to convert the array to special array by performing some operations. The allowed operati

Twisted Pairs: Twisted pairs are familiar to all of us as the copper wire telephone lines. These are of low frequency, and support a limited bandwidth (one voice channel) but

#questioPurpose of this assignment: 1. Using dictionaries. Assignment: Write a program to read a text file and create a dictionary. The keys for the dictionary should be all

what is ms dos?

CONCEPT OF PROGRAMMING LANGUAGE: In order to communicate with other human beings, one needs some language or a medium. In the same way for solving problems, a programming  lan

SYSTEMS SOFTWARE Systems Software generally is the software which control the computers and other peripherals. Ex: MS DOS, Windows 95, Unix, NetWare and Windows NT et

Question 1 Explain different functions of an operating system. Explain the evolution of operating systems Question 2 Explain process creation and process termination Ques

QUESTION (a) (i) Why is the Random class in the .NET framework not suitable for generating random bytes for cryptography purposes? (ii) Mention two characteristics required

wrap that computes a customer water bill. The bill include Rs.100 water demand charge + a consumption charge of Rs.1.5 for every thousand gallons used. Consumption is figured from