Define the attribute inheritance, Database Management System

Define the Attribute Inheritance

The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Namely, all the attributes of the higher level entity set are as well the attributes of the lower level entity set.

Posted Date: 5/6/2013 3:58:47 AM | Location : United States







Related Discussions:- Define the attribute inheritance, Assignment Help, Ask Question on Define the attribute inheritance, Get Answer, Expert's Help, Define the attribute inheritance Discussions

Write discussion on Define the attribute inheritance
Your posts are moderated
Related Questions
Java program for horrizontal fragmentation in distributed database

Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.

Describe the Association: Design  Before we describe association design let us define association "Association is set of links between two objects in the object model". It is


CREATE TABLE prodtrans ( pno number (4) ptype char (1) CHECK (ptype in ('I','R','S')), qty number (5) FOREIGN KEY pno REFERENCES product (pno) ON DELETE CASCADE);

How to create a biological database based on viruses. How to decide which attribute should be there in the table and schema? How to identify the primary keys, foreign keys, domain,

What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.

The dataset " CFOLYMPICS.XLS " contains the observations used in the above article.  The definitions of the variables are also included in this spreadsheet.  However, for the purpo

FDs in Relationships:  Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:

Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t