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Database Design Using Normalization - Database MCQ Questions and answers- Technical Aptitude

Database Design Using Normalization(Database) mcq questions and answers with easy and logical explanations for various competitive examination, interview and entrance test. Database Mcq question are important for technical exam and interview. Page-3 section-1

21
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.
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Answer: Option B
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22
Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF.
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Answer: Option A
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23
When building a database from an existing set of tables, we still need to consider normalization principles.
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Answer: Option A
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24
We have normalized a table into BCNF if all candidate keys are determinants.
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Answer: Option B
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25
We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table.
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Answer: Option B
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26
One common design problem when designing a database from existing data is the use of a single cell in one column to store multiple values of an attribute.
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Answer: Option B
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27
In all cases, normalization into BCNF is desirable.
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Answer: Option B
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28
Denormalized tables are in BCNF.
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Answer: Option B
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29
We can eliminate modification anomalies with proper normalization that results in tables in BCNF.
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Answer: Option A
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30
Proper normalization eliminates duplicated data.
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Answer: Option B
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