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

Ask an Expert

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

Write your message here..

Related Questions

What are domain constraints, What are domain constraints? A domain is a... What are domain constraints? A domain is a set of values that might be assigned to an attribute .all values that appear in a column of a relation must be taken from the similar

Draw entity relationship diagram, Draw entity relationship diagram for the ... Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui

What is meant by buffer blocks and disk buffer, What is meant by buffer blo... What is meant by buffer blocks and disk buffer   The blocks residing temporarily in main memory are referred to as buffer blocks. The area of memory where blocks reside t

What is the function of io/m signal in the 8085, What is the function of IO... What is the function of IO/M signal in the 8085? It is a status signal. It is used to differentiate among memory locations and I/O operations. When this signal is low (IO/M = 0

Single valued normalisation, Single Valued Normalisation  Codd in the y... Single Valued Normalisation  Codd in the year 1972 formed three normal forms (1NF, 2NF, and 3NF). These were based on functional dependencies between the attributes of a relati

Determine the strong and weak entity, Determine the Strong and Weak Entity ... Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a

RDM & ER Modelling, #questiRegional Gardens has many nurseries, including W... #questiRegional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively.

Define the terms entity, Define the terms entity, attribute, role and relat... Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them.         Ans: Entity:   An entity is a "thing" or "object" in th

Define the term- control as state within program, Control as State within P... Control as State within Program 1.  The term control exactly means to check effect of input within a program. For illustration, in Figure, after the ATM card is inserted (a

What purpose of tables, What is the purpose of tables, private synonyms and... What is the purpose of tables, private synonyms and public synonyms? If there are multiple objects of similar name on an Oracle database, that order are they accessed in? The r