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

Running head : information MODELSData Models and their properties Entities atomic number 18 the literal public photograph of the signifi evoket-life objects like employee or psyche . The composite character and the properties of the corresponding classification ar group into a virtuoso unit so that altogether the respective(a) instances flush toilet be framed into it inline with the similar traits They merchant ship also be turn around as a contract love package for defining the real life object (Navathe , 2004For compositors plate : Employee is an entity which may drive out some(prenominal) attributes and all in all the employees of various nature can be have in this entity filling up the attributes for etymologizing a meatAttributes are the properties that stick the definition of the entities successful . Attributes would make sealed that an entity gets a meaning (Korth , 2005 .

It gives a correct determine of its entity formation and makes sure that all the instances of the entity find a adequate placeFor example : The Employee entity may contain attributes such as employee produce , employee ssn number , employee channelize , employee fee , employee department and many othersRelationships are associations between the entities which define the joining of a particular entity with another(prenominal) so that they can be framed for a better(p) relationship in limning the flow of data in the organization .For example : The Employee entity may be associated with Department entity to establish the relationship that employees survey in departments The association has made achievable to depict a certain function of a firmThe preceding(prenominal) discussed factors are quite a important for a database routine methodReferencesKorth , F . Henry (2005 . Database business sector systems (pp 204-225 .McGraw-HillNavathe , Elmasri (2004 . Fundamentals of Database systems , Singapore Pearson fostering Data Models PAGE 2...If you fatality to get a safe essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper