1. When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given.

A. True
B. False

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2. Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF.

A. True
B. False

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3. When building a database from an existing set of tables, we still need to consider normalization principles.

A. True
B. False

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4. We have normalized a table into BCNF if all candidate keys are determinants.

A. True
B. False

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5. We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table.

A. True
B. False

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