What is a partial dependency? With what normal form is it associated? What three data anomalies are likely to be the result of a data redundancy?

In two to three detailed paragraphs, answer each of the following questions:
– What is a partial dependency? With what normal form is it associated? What three data anomalies are likely to be the result of a data redundancy?
– Explain the use of and the differences between DDL commands, DML commands, and DCL commands. Give an example of each type of command.
– The relational set operators UNION, INTERSECT, and MINUS work properly only if the relations are union-compatible. What does union-compatible mean, and how would you check for this condition?

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