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QUESTION Given the sample of the GPADatabase in a file, write SQL Stored function called calculateGPA which receive student's registration number, semester and academic year and return the corresponding semester GPA truncated to one decimal place. NOTE: GPA = (Grade Points x Credits) Σ Credits

QUESTION Given the sample of the GPADatabase in a file, write SQL Stored function called calculateGPA which receive student's registration number, semester and academic year and return the corresponding semester GPA truncated to one decimal place. NOTE: GPA = (Grade Points x Credits) Σ Credits

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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SUBMISSION DATE: INSTRUCTION > Use the Sample Database Given in a File named GPAdatabase.sql to Answer the Question QUESTION Given the sample of the GPADatabase in a file, write SQL Stored function called calculateGPA which receive student's registration number, semester and academic year and return the corresponding semester GPA truncated to one decimal place. NOTE: GPA = (Grade Points x Credits) Σ Credits Truncation means to discard the remaining. That is 3.9999 = 3.9 when truncated to one decimal place Example of GPA Calculation MODULE LTU 07205 LTU 07206 LTU 07207 LTU 07208 LTU 07209 GPA = CREDITS 12 15 12 12 (4x12) + (2x15)+(4x12)+(2 x 12)+(1x0) 12 +15 +12 +12 +0 = 2.9 NIT/BLTM/2017/214 NIT/BLTM/2017/215 NIT/BLTM/2017/215 NIT/BLTM/2017/216 NIT/BLTM/2017/216 NIT/BLTM/2017/217 NIT/BLTM/2017/217 Compare your results against these output studentID NIT/BLTM/2017/214 SCORE 65.0 45.8 64.0 40.0 35.7 Test your function against the following query, changing the value of the studentID and semester aYear 2017/2018 2017/2018 select studentID, aYear, semester, calculateGPA(studentID, aYear, semester) from enrollment where studentID=NIT/BLTM/2017/214' AND ayear=2017/2018' AND semester=1 limit 1: 2017/2018 2017/2018 2017/2018 2017/2018 2017/2018 2017/2018 GRADE B+ (4 points) C (2 points) B+ (4 points) C (2 point) D (1 point) Semester 1 2 1 2 1 2 1 2 = GPA 3.4 2.9 0.9 2.8 3.0 3.2 5.0 4.7 150 51 Golden HINT: Use combination of SQL Counter Controlled While loop and SQL if-else-if structures to help solve the question
Transcribed Image Text:SUBMISSION DATE: INSTRUCTION > Use the Sample Database Given in a File named GPAdatabase.sql to Answer the Question QUESTION Given the sample of the GPADatabase in a file, write SQL Stored function called calculateGPA which receive student's registration number, semester and academic year and return the corresponding semester GPA truncated to one decimal place. NOTE: GPA = (Grade Points x Credits) Σ Credits Truncation means to discard the remaining. That is 3.9999 = 3.9 when truncated to one decimal place Example of GPA Calculation MODULE LTU 07205 LTU 07206 LTU 07207 LTU 07208 LTU 07209 GPA = CREDITS 12 15 12 12 (4x12) + (2x15)+(4x12)+(2 x 12)+(1x0) 12 +15 +12 +12 +0 = 2.9 NIT/BLTM/2017/214 NIT/BLTM/2017/215 NIT/BLTM/2017/215 NIT/BLTM/2017/216 NIT/BLTM/2017/216 NIT/BLTM/2017/217 NIT/BLTM/2017/217 Compare your results against these output studentID NIT/BLTM/2017/214 SCORE 65.0 45.8 64.0 40.0 35.7 Test your function against the following query, changing the value of the studentID and semester aYear 2017/2018 2017/2018 select studentID, aYear, semester, calculateGPA(studentID, aYear, semester) from enrollment where studentID=NIT/BLTM/2017/214' AND ayear=2017/2018' AND semester=1 limit 1: 2017/2018 2017/2018 2017/2018 2017/2018 2017/2018 2017/2018 GRADE B+ (4 points) C (2 points) B+ (4 points) C (2 point) D (1 point) Semester 1 2 1 2 1 2 1 2 = GPA 3.4 2.9 0.9 2.8 3.0 3.2 5.0 4.7 150 51 Golden HINT: Use combination of SQL Counter Controlled While loop and SQL if-else-if structures to help solve the question
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