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DBMS Korth Edition 4 Exercise 11 Question 14 (Page No. 442)
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Explain why the allocation of records to blocks affects database-system performance significantly.
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DBMS Korth Edition 4 Exercise 11 Question 18 (Page No. 442)
Consider a relational database with two relations: $course (course-name, room, instructor)$ $enrollment (course-name, student-name, grade)$ Define instances of these relations for three courses, each of which enrolls five students. Give a file structure of these relations that uses clustering.
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DBMS Korth Edition 4 Exercise 11 Question 17 (Page No. 442)
List two advantages and two disadvantages of each of the following strategies for storing a relational database: $a$. Store each relation in one file. $b$. Store multiple relations (perhaps even the entire database) in one file.
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DBMS Korth Edition 4 Exercise 11 Question 16 (Page No. 442)
In the sequential file organization, why is an overflow block used even if there is, at the moment, only one overflow record ?
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DBMS Korth Edition 4 Exercise 11 Question 10 (Page No. 441)
Give an example of a database application in which the pointer method of representing variable-length records is preferable to the reserved-space method.Explain your answer.
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