EXAMIANS
When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time.
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In a 1:N relationship, the foreign key is placed in:
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When the parent entity is required, a new child row can always be inserted.
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An ideal primary key is short, numeric and seldom changing.
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For every relationship, there are six possible sets of minimum cardinalities.
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(STREET ADDRESS, CITY, STATE, ZIP) is an ideal primary key.
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Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?
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In a 1:1 relationship, the foreign key is placed in:
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All primary keys are required.
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In 1:N relationships, which entity becomes the parent entity is arbitrary.
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