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Database - Physical Database Design

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Exercise

"Do not wait for leaders; do it alone, person to person."
- Mother Teresa
1. 

If a denormalization situation exists with a one-to-one binary relationship, which of the following is true?
A. All fields are stored in one relation.
B. All fields are stored in two relations.
C. All fields are stored in three relations.
D. All fields are stored in four relations.
2. 

Selecting a data type involves which of the following?
A. Maximize storage space
B. Represent most values
C. Improve data integrity
D. All of the above.
3. 

What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?
A. VARCHAR2B. CHAR
C. LONGD. NUMBER
4. 

If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?
A. All fields are stored in one relation.
B. All fields are stored in two relations.
C. All fields are stored in three relations.
D. All fields are stored in four relations.
5. 

Which of the following is an advantage of partitioning?
A. Complexity
B. Inconsistent access speed
C. Extra space
D. Security

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