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

Assignment Help:
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.

Related Discussions:- Multi-valued attribute dbms, computer science

Ip basics, IP provide connectionless service to upper layer IP protocol is ...

IP provide connectionless service to upper layer IP protocol is very simple could not guarantee the reliability of transportations IP protocol is Point to Point IP provide the unif

Discuss the challenges in it infrastructure management, Question 1 What is...

Question 1 What is difference between cathode ray tube monitors and LCD monitors? List three popular types of operating systems and give brief introduction of each type Que

Netbooks, Netbooks: Netbooks are special type of Laptop which is very ...

Netbooks: Netbooks are special type of Laptop which is very  light and small. Due to its size and weight it is very portable and one may carry it very easily. Dissimilar to La

Explain how cpu responses to an interrupts, Problem 1. Explain the diff...

Problem 1. Explain the different categories of instructions. Explanation of 4 categories 2. Explain the steps to be followed for the addition of floating point numb

Unix Shell, Write a shell script, change-lines, which will substitute a str...

Write a shell script, change-lines, which will substitute a string for a replacement string for each occurance of the string in files specified. The original file will be saved,

Noemalization.., what is means with respect to software engineering?

what is means with respect to software engineering?

Define jumps and loops , The unconditional jumps in a written program in a...

The unconditional jumps in a written program in assembler language are specified by the jmp instruction; a jump is to moves the flow of the execution of a program by sending the co

What is .net framework, Qestion 1 What is .Net Framework? Qestion 2 W...

Qestion 1 What is .Net Framework? Qestion 2 Write short notes on constructors and destructors Qestion 3 Explain boxing and unboxing with examples Qestion 4 What is

Magnetic tapes and magnetic disk, Magnetic tapes and Magnetic Disk: Ma...

Magnetic tapes and Magnetic Disk: Magnetic tapes are very commonly used for storing large quantum of data for which rapid access is not necessary; specially for archival data

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