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(c)

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(b)

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(a) If an incoming row belongs to a product that doesn't exist in the products table, both the Insert/Update step and the Table output step will insert the record.

If an incoming row belongs to a product that already exist in the products table, the Insert/Update step updates it. In this alternative version, the Table output will fail (there cannot be two products with the same value for the primary key) but the failing row goes to the Update step that updates the record.

If an incoming row contains invalid data (for example, a price with a non numeric value), neither of the Insert/Update step, the Table output step, and the Update step would insert or update the table with this product.

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(c). To limit the number of rows in MySQL you use the clause LIMIT. (a) and (b) are dialects: (a) is valid in HSQLDB. (b) is valid in Oracle. If you put any of this options in a Table Input for querying the js database, the transformati on would fail