Session 6.pptx - Session 6 2017-18 KL University The...

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© 2017-18 KL University – The contents of this presentation are an intellectual and copyrighted property of KL University. ALL RIGHTS RESERVED 1 Session 6
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Relational Database Design by ER- and EER-to-Relational Mapping
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Relational Database Design by ER- and EER-to- Relational Mapping Design a relational database schema Based on a conceptual schema design Seven-step algorithm to convert the basic ER model constructs into relations Additional steps for EER model © 2017-18 KL University – The contents of this presentation are an intellectual and copyrighted property of KL University. ALL RIGHTS RESERVED 3
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Relational Database Design Using ER-to-Relational Mapping © 2017-18 KL University – The contents of this presentation are an intellectual and copyrighted property of KL University. ALL RIGHTS RESERVED 4
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Outline ER-to-Relational Mapping Algorithm Step 1: Mapping of Regular Entity Types Step 2: Mapping of Weak Entity Types Step 3: Mapping of Binary 1:1 Relation Types Step 4: Mapping of Binary 1:N Relationship Types. Step 5: Mapping of Binary M:N Relationship Types. Step 6: Mapping of Multivalued attributes. Step 7: Mapping of N-ary Relationship Types. Mapping EER Model Constructs to Relations Step 8: Options for Mapping Specialization or Generalization. Step 9: Mapping of Union Types (Categories). © 2017-18 KL University – The contents of this presentation are an intellectual and copyrighted property of KL University. ALL RIGHTS RESERVED 6
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ER-to-Relational Mapping Algorithm COMPANY database example
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  • Fall '14
  • rani
  • Relational model, Multivalued Attributes, ER-to-Relational Mapping Algorithm, Mapping of Specialization or Generalization

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