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June 20, 2017 mfadmin Database

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Database operations

Insert: add new dataModify (aka Update): change existing dataDelete: remove existing data

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Previous Post:Key properties of relational modeling,”Values are atomic (i.e., a data cell cannot contain multiple values)Values in a given column are of the same domain/type (e.g., float)No rows contain completely duplicate dataThe order of rows and columns is completely irrelevantThe names of every relation are unique and within relations

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