Please answer true or false for each statement. 1. An attribute that is a foreign key...

Please answer true or false for each statement.

1. An attribute that is a foreign key cannot have a null value.

2.The Excel spreadsheet’s data model is set-theoretic.

3.A candidate key is a property of a database that must always be unique for all relations in the database.

4. A table in Microsoft’s Access must have at least one column.

5. In the relational model, a relation schema is a set of tuples.

Expert Solution

venereology answered 4 months ago

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