QUESTION 16Consider the following Grades table and express in Relational Algebra each of the questions below:GradesStudentId CourseCode Semester Grade1001ITDR3101FL20B1002ITSW3104 FL20A1003ITGP4101SP20A1001ITDR2106SP21Ca. List the grades of students who studied the course having the code "ITDR2106* in the semester"FL20".]b. List the details of students who didn't get the grade 'A'’ in any course.c. List the ids students who got the grade B' in SP20° semester.С.

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QUESTION 16 Consider the following Grades table and express in Relational Algebra each of the questions below: Grades StudentId CourseCode Semester Grade 1001 ITDR3101 FL20 B 1002 ITSW3104 FL20 A 1003 ITGP4101 SP20 A 1001 ITDR2106 || SP21 a. List the grades of students who studied the course having the code "ITDR2106" in the semester "FL20". b. List the details of students who didn't get the grade A' in any course. c. List the ids students who got the grade B' in SP20' semester.

QUESTION 16 Consider the following Grades table and express in Relational Algebra each of the questions below: Grades StudentId CourseCode Semester Grade 1001 ITDR3101 FL20 B 1002 ITSW3104 FL20 A 1003 ITGP4101 SP20 A 1001 ITDR2106 || SP21 a. List the grades of students who studied the course having the code "ITDR2106" in the semester "FL20". b. List the details of students who didn't get the grade A' in any course. c. List the ids students who got the grade B' in SP20' semester.

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

Problem 1PE

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Concept explainers

SQL

SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.

Queries

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.

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