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Earn 100
Which of the following statements concerning relational database is true?
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Important Questions on Database Management System
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IMPORTANT
NF is preferred than BCNF because:
1. We normally choose to retain dependency preservation.
2. A high penalty in system performance is to be paid or risk the integrity of the data in our database.
3. There isn't any problem of repetition of information.
4. Given statement is wrong.
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Which of the following is the correct statement about SQL?
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Which of the following is correct?
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In SQL, relations can contain null values, and comparisons with null values are treated as unknown. Suppose all comparisons with a null value are treated as false. Which of the following pairs is not equivalent?
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Locking is introduced into database so that_____.
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Which of the following is true for two-phase locking?
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Index sequential file is made of all of these expect_____.
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Choose the correct statements _____.
