explain thee diffrent types of data models

Posted Date: 4/16/2018 2:12:05 AM | Location : USA

Ask an Expert

Related Discussions:- datamodels, Assignment Help, Ask Question on datamodels, Get Answer, Expert's Help, datamodels Discussions

Write discussion on datamodels
Your posts are moderated

Write your message here..

Related Questions

Explain categories of failures that occur in oracle database, Explain diffe... Explain different categories of failures that occur in Oracle database? Categories of Failures - In Oracle database subsequent types of failures can occurred: Statement Failu

Explain concurrency control, Explain concurrency control? Concurrency ... Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read

A weak entity set and its identifying relationship, Q.  Define a weak entit... Q.  Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set.    Entity is a t

What is a foreign key, What is a foreign key, and what is it used for? ... What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu

Hoework, Farmer Bob, Farmer Jane and Farmer Jose run a cow farming co-op. ... Farmer Bob, Farmer Jane and Farmer Jose run a cow farming co-op. For every cow they keep the cow’s name, age (or date of birth), breed and numbered plastic ear tag. The each of t

List the table modification commands in sql, List the table modification co... List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view

What does conceptual design work, What does conceptual design work? A c... What does conceptual design work? A conceptual design involves modelling independent of the DBMS.

Objectives-database recovery and security, Objectives Define the te... Objectives Define the terms RECOVERY and INTEGRITY; Define Recovery Techniques; Explain Error and Error detection techniques, and Define types of Authorisation.

What is a super key, What is a super key? A super key is a set of one o... What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.

Illustrate the cardinality of relationship, Cardinality of Relationship ... Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher