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

A:

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

A: Answer in step 2

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

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

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.