Can you restructure the columns in this database - without adding or deleting an

Question

Can you restructure the columns in this database - without adding or deleting any tables, so that to minimize the number of changes that cascade throughout the tables when such a renaming of a department occurs? Explain how to restructure (if you answered Yes) or why restructuring is not possible (if you answered No).

STUDENT GRADE REPORT Name S Class Major Student_numberSection_idontifer Grado Smith 17 112 119 85 92 102 135 17 Cs 17 COURSE Intro to Computer Science Data Structures Discrete Mathematics Database CS1310 C$3320 MATH2410 CS338 CS MATH CS PREREQUISITE Course number Prerequisite number C$3380 C$3380 CS3320 CS3320 MATH2410 C$1310 SECTION Section_identifier Gourse number SemesterYear Instructor 85 92 102 112 119 135 MATH2410Fa CS1310 CS3320 MATH2410 CS1310 CS3380 Fal Spring08 Fall Fal Fall 07 Anderson 08 Chang 08 Anderson 08 Stone

Explanation / Answer

This database cannot be further restructured under given conditions i.e. without adding or deleting any tables.

Reason: The database is in normalized form and cannot be further normalized. One of the goals of normalization, among others, is to ensure that database achieves the optimal structure. This helps in minimizing the number of changes that are required to be done in other tables when one table is affected. Since your database is perfectly normalized, no more restructuring is possible.

In other words: In case a department is renamed, the number of changes to be done in other tables is already minimized and cannot be further minimized.

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