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The following operations are performed during database testing

70. The following operations are performed during database testing:

1. During database testing, data values in columns are verified to ensure they are valid.
2. Tests are conducted on databases to determine whether primary or foreign keys are maintained.
3. Testing the database verifies if the column has any missing data.
4. All of the above

Answer: D) All of the above

Explanation:

The following operations are performed during database testing:

1. During database testing, data values in columns are verified to ensure they are valid.
2. Tests are conducted on databases to determine whether primary or foreign keys are maintained.
3. Testing the database verifies if the column has any missing data.