Week5_DesignProcess.pdf - Background Material Basics of...

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Background Material: Basics of Modeling Model : a collection of entities and relationship among entities Entities : An entity is an object that exists and is distinguishable from other objects Example: person, company, product Entities have attributes Example: people have names and addresses Relationship : representation of the fact that certain entities are related to each other Example: persons order products In Dimensional Modeling: Entities are represented with Dimensions Relationships are represented with Facts
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Dimensional Modeling Vocabulary
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Dimensional Modeling Vocabulary
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Background material: Primary and Foreign Keys Primary keys (PK) : A field or set of fields that h as unique value for each record Foreign keys (FK) : Another table's primary key Values of FK match values of PK, indicating relationship
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Dimensional Modeling Vocabulary
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Dimensional Modeling Vocabulary
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Dimensional Modeling Vocabulary
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Dimensional Modeling Vocabulary (PK) (PK) (PK)
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Dimensional Modeling Vocabulary (PK) (PK) (PK)
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Dimensional Modeling Vocabulary
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Four-Step Dimensional Design Process
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Chose Business Objective Identifying the actual business process a datawarehouse should cover. This could be Marketing, Sales, HR, etc. as per the data analysis needs of the organization. The selection of the
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  • Fall '19
  • Data warehousing, Star schema, Database normalization, Fact table, Dimensional Modeling Vocabulary

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