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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-4 section-1

31
The design guidelines and priorities for read-only databases are different because read-only databases are never updated.
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Answer & Solution
Answer: Option A
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32
The phrase "SALE.CNumber must exist in CUSTOMER.CNumber" is a referential integrity constraint.
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Answer: Option A
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33
We use the SQL construct COUNT(*) to count the number of rows in a table.
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Answer: Option A
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34
When you are given a set of tables and asked to create a database to store their data, the first step is to create the new database.
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Answer: Option B
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35
Multivalued dependencies create harmless anomalies that should be noted, but do not always need to be eliminated.
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Answer: Option B
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36
One common design problem when designing a database from existing data is the use of a general-purpose remarks column in the received data.
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Answer: Option A
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37
One common design problem when designing a database from existing data is the presence of missing values, called blank values, in received data.
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Answer: Option B
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38
Normalization requires programmers to write more complex SQL.
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Answer: Option A
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39
One common design problem when designing a database from existing data is the presence of inconsistent values in the received data.
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Answer: Option A
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40
When building a database from an existing set of tables, we may safely assume that there are no multivalued dependencies in the data we are given.
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Answer: Option B
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