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Below is a preliminary entity relationship ( ER ) data model for a stationary sales database. Extend and modify the ER data model using Crow's
Below is a preliminary entity relationship ER data model for a stationary sales database. Extend and modify the ER data model using Crow's foot notation; create appropriate identifiers and attributes for each entity. Explain how you went from first normal form NF to second normal form NF and how you achieved third normal form NF Lastly justify the decisions that you make regarding minimum and maximum cardinality.
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