Differentiate Between Database Models Including Relational, Network, Hierarchical, And Object-oriented Models.

Running head : DATABASE MODELS database Models Hierarchical information stupefy is maneuver diagram comparable and usually is done where there is a immense possibility of repetition of data . The p bent-child phylogenetic relation depicts a one-to-many relationship among the corner elements . It is establish on tree rules for a crabbed data structureFor exercise : If one desires to strain the employee s children records hierarchical dumbfound would be suitableNetwork data model desexs it potential to routine many-to-many relationships and arrange sure that data modeling is compound from the hierarchical model . It is based on set constructsFor role model : Many employees flush toilet work in several(prenominal) projects on part-time basisRelational data model is based on relational data structures , one constraints and smooth access to selective information Definition Language and Data Manipulation Language statements for installation and retrieval of data . It is based on relational algebra (Navathe , 2004 .

The features could be attributed as followsAtomic valuesPrimary and foreign keyRow and chromatography column structure of the database tablesAll kind of relationships are possible , matched , one-to-many many-to-one and many-to-manyFor slip : Employee database with associations between many tablesObject-oriented databases make sure that the integration of the physical object-oriented concepts like data abstraction , encapsulation pleomorphism and inheritance i! s achieved to larger end in store and retrieval of data (Korth , 2005 . The performance benefits of storage retrieval and mapping into one-to-one is done and carries better techniques to map complex data relationshipsFor example : Employee database with external penetrations of their associations with banks and insurance firms are better managed by object oriented databasesReferencesKorth , F . hydrogen (2005 . Database Management systems . McGraw HillNavathe , Elmasri (2004 . Fundamentals of Database systems , capital of Singapore Pearson EducationDatabase Models PAGE 2...If you want to provoke a full essay, army it on our website: BestEssayCheap.com

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