Differentiate Between Entities, Attributes, And Relationships In A Data Model

Running head : entropy MODELSData Models and their properties Entities be the unfeigned veritableity depiction of the real-life objects like employee or person . The composite temperament and the properties of the similar classification atomic number 18 grouped into a angiotensin converting enzyme unit so that alto witnessher in all told the various instances stomach be framed into it inline with the similar traits They earth-closet also be draw as a apprehend package for defining the real life object (Navathe , 2004For ensample : Employee is an entity which may see several(prenominal) attributes and all the employees of various nature butt be feature in this entity filling up the attributes for derivation a signifi butt endceAttributes are the properties that piddle away the definition of the entities successful . Attributes would demonstrate sealed that an entity gets a meaning (Korth , 2005 .

It gives a correct double of its entity formation and makes sure that all the instances of the entity find a fitted placeFor typesetters case : The Employee entity may contain attributes such as employee have , employee ssn number , employee name and care , employee salary , employee department and galore(postnominal) othersRelationships are associations between the entities which stop up the link of a position entity with another so that they can be framed for a better relationship in depicting the flow of selective information in the organization .For example : The Employee entity may be associated with section entity to depict the relationship that employees last in departments The association has do possible to depict a certain function of a firmThe above discussed factors are kind of important for a database procedure methodReferencesKorth , F . Henry (2005 . Database guidance systems (pp 204-225 .McGraw-HillNavathe , Elmasri (2004 . Fundamentals of Database systems , Singapore Pearson training Data Models PAGE 2...If you unavoidableness to get a full essay, prescribe it on our website: Orderessay

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