Student(Stud_Id, name, addr, sex, DOB, country , major) Lecturer(Lect_id, name, sex, department, tel_no) Course(Course_code, description, credit_hr, department) Registration(Stud_id, course_code, room_no, lect_id, time) Write the correct relational algebra for the following queries:  Display student id, name and sex for all male students from the country of ‘Singapore’. Display student id, name, and major for all students that majoring in ‘CS’ or ‘ENG’. Display detail registration listing for courses that have more than 3 credit hours. Display student name and course description for all students taking courses offered by ‘IS’ department.

Q: Display the list of students who are involved in the IT club Display the details of all the…

A: First get the studid from Club table and then get those Student details This can be done using inner…

Q: Name of subject: Database Programming     Display the name of supplier(s) that supplied more…

A: Approach: Step1: First find the max priced IBM make computer. this will be subquery. Step2: Write a…

Q: Write queries in relational algebra 1- Select all employees who either work in department 6 and make…

A: SELECT * FROM EMPLOYEE WHERE (DeptNo = 6  AND SALARY > 25000) OR (DeptNo = 4 AND SALARY >…

Q: Use the Committee table and create a query that displays the following output: Name FullAddress…

A: The query is given as per mysql in the next step:

Q: Rewrite the following query in relational algebra form using operator tree. SELECT std_name FROM…

A: Relational algebra may be a procedural language , which takes instances of relations as input and…

Q: CUSTOMER Customer table is composed of customer number, name and phone number. Give and fill-in the…

A: Answer:- Atrributes: It is a column in a table Table CUSTOMER: Atrributes : 1.custID( Type),…

Q: SOQL Assignment Salesforce: You have to write a SOQL query in which we have to find out all the…

A: Use the Salesforce Object Query Language (SOQL) to search your organization’s Salesforce data for…

Q: Write a query to display the author ID, first name, last name, and year of birth for all authors…

A: The below query will return a list of authors with their IDs, first names, last names, and birth…

Q: Write the relational algebra formula to apply an INTERSECT relational operator to the tables

A: Relational algebra formula for Intersect Relational Operator: An Intersect relational operator…

Q: The following figure is part of a university database. LNAME and FNAME stands for last name and…

A: Project operation (denoted by pi (∏) symbol) is used to select desired columns (or attributes) from…

Q: Which of the following statements is correct? (refer to the tables in the JustLee Books database.)a.…

A: The answer is given below,

Q: QUESTION 16 Consider the following Grades table and express in Relational Algebra each of the…

A:

Q: Difference between procedure and function in SQL

A: SQL functions and procedures are database objects designed to streamline and improve the…

Q: The first requirement: Using the SQL language, transform the following entity model into tables in…

A:

Q: Why might one use the SPLIT function in SQL for string manipulations, and what are its limitations?

A: Depending on the given delimiter, the divide function in SQL can be used to split text into multiple…

Q: Please write SQL codes to create a sequence and name it member_seq and use it to populate below data…

A: Given: Write SQL codes to create a sequence and name it member_seq and use it to populate below data…

Q: 1. The data type for Borrower_name in Borrowers Table is: A. Short text C. Currency B. Long text D.…

A: As the schema design tabular structure of the Borrowers table in question indicates that it is…

Q: SQL queries

A: According to the question, we need to write the SQL queries of the following questions: Write a…

Q: DROP TABLE IF EXISTS Worker; CREATE TABLE Worker ( WORKER_ID INTEGER NOT NULL PRIMARY KEY…

A: Answer in step 2

Q: movie(mid, title, description, startdate, enddate, organizer)   Write a query in Relational Algebra…

A: sigma is used to select based on condition and put projection (pi) symbol before select along with…

Q: MEMBER (memberID (PK), profession, name, address, telNo, areaCode (FK) VOLUNTEER (volunteerID (PK),…

A: The answer as given below;

Q: Develop a query to provide details about customer sales at the end of 2014. You want the output to…

A: SELECT Sale.ShipToCity, Customer.LastName, Sale.ShipDateFROM Sale JOIN Customer on  Sale.CustID…

Q: (Consider table employees with the following colunms (EMPLOYEE ID, FIRST NAME, LAST_NAME , EMAIL…

A: Select CONCAT(M.First_Name,' ', M.Last_Name) as MANAGER_NAME , M.Department_ID from Employees E…

Q: A subquery must be placed in the outer query’s HAVING clause if: (refer to the tables in the JustLee…

A: A subquery must be placed in the outer query's HAVING clause if the value returned by the inner…

Q: The following table stores details of tutors, students and dates of lectures. The Primary Key is…

A: Rules regarding 2nd NF:-  tables must be in 1st NF.  No non-prime is functionally dependent on part…

Q: 2. Use RELATIONAL ALGEBRA to write the following queries: a) Find names and surnames of professors,…

A: In this question we have to understand about the schema provided to write a RELATIONAL ALGEBRA for…

Q: Consider Following Tables. Student ( regNo, sName, sCity, sCGPA, sAge) Course ( cCode, cName,…

A: Given: Student ( regNo, sName, sCity, sCGPA, sAge) Course ( cCode, cName, credit_hours) Enrollment…

Q: The following fields are presented in the table: Member Last Name, MemberFirstName, Street, City,…

A: Information provided: MemberLastName, MemberFirstName, Street, City, State, ZipCode, and…

Q: oye

A: SQL queries are used to insert, delete and manipulate data from database tables. We are given two…

Q: Consider Following Tables. Student ( regNo, sName, sCity, sCGPA, sAge) Course ( cCode, cName,…

A: CARTESIAN PRODUCT:        It will return the product of the two or more joined tables.       It is…

Q: Q1- List all employees whose job_id is IT_PROG and hired after 01-JAN-95 and earning more than 5000.…

A: Let the table name be emp which has the following columns   employee_id, first_name, last_name,…

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.