The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date : What was the request of the relational algebra query below (make a query text )

Q: What is the difference between a UNION query and an EXCEPT (MINUS) query?

A: The  UNION operation comprises of logical OR while INTERSECT is a logical AND. The EXCEPT(MINUS)…

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: Just let me know what to write for the SQL theory: Question:  Write a query to display the first…

A: Solution:   Given,

Q: Given the schema: department(department_id, department_name) employees (employee_id, first_name,…

A: Given the Schema we have to write SQL query.

Q: Employee_Id, First_Name, Last_Name, Email, Phone_Number, Hire_Date, Job_Id, Salary, Commission_Pct,…

A: a. To get the average salary and number of employees working in department 90, we can use the…

Q: and express in Relational Algebra each of the questions below: Grades StudentId CourseCode…

A: Q9.

Q: List the grades of students who studied the course having the code “ITDR2106” in the semester…

A:

Q: Given the table customers which contains columns customer_id, first_name, last_name, and state, and…

A: SELECT C.LASTNAME, A.STATE, A.ZIP FROM CUSTOMER AS C INNER JOIN ADDRESS AS A on…

Q: Write a query which set the following constraints in Customers table (in MySQL). First Name and…

A: We are going to add constraints to the columns in the table Customers. First we will add constraint…

Q: Suppose you have two tables: EMPLOYEE and EMPLOYEE_1. The EMPLOYEE table contains the records for…

A: To display the output of the given tables by using UNION operator.Two tables are given:First Table…

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: A)  Write a query which shows the employee IDs that are unique to the employee table. Order the…

A: Solution A) -  In the first part, we need to write a query to employee Ids and the employee should…

Q: We have employee table contains (emp-no, emp-name, emp-age, emp-salary, emp-department) write a…

A: Given Employee table contains the attributes: emp_no, emp_name, emp_age, emp_salary, emp_department

Q: The data in this table is as follows: Team Opponent Dragons Carp Bay Stars Marines Ham Fighters…

A: As the query suggested it will select the team from the table score where the corresponding value of…

Q: How does the RANK() function differ from DENSE_RANK() in SQL when ranking data?

A: Data ranking in SQL is accomplished using both the RANK() and DENSE_RANK() methods. They are…

Q: Write SQL code for  To Extend the code in ( Perform a LEFT OUTER JOIN between the tables…

A: SQL (Structured Query Language) It is a domain-precise language utilized in programming and…

Q: Write a function to find the average of salary for instructors. header of function…

A: create table instructor (    ID char(5),    name varchar(20) not null,    dept_name varchar(20),…

Q: the HR department needs the department name, manager first name, manager last name, and job title.…

A: SQL: SQL stands for Structuref Query Language. It is used to access and manipulate the database…

Q: What is the difference between a UNION query and an EXCEPT (MINUS) query?

A: Given: The result that is included in the first table but absent from the second table is obtained…

Q: Write PL/SQL or T-SQL procedures to accomplish the following tasks: A: obtain the name and credit…

A: Actually, SQL stands for Structured Query Language.

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: 19. The following code refers to the sample data in the table people. What is the result of each…

A: Note: - As per the guidelines we can only answer one specific question at a time. Please resubmit…

Q: how would I create a query that lists ORDNO and MONTH for all orders in the ORDER table.  Then how…

A: ORDER BY is used to sort the results and we can specify the condition with which column reference we…

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: How many patients in the database have been diagnosed with acute bronchitis (ICD9Code = 466) and…

A: Count Query :- SELECT COUNT(column_name) FROM table_name WHERE condition; Groupby Query :-…

Q: This is the problem: (from Database Systems Book, 13th ed) Write a query to display the author last…

A: Create table AUTHORS_OF_BOOKS using the below query: SQL QUERY: /* Create a table called NAMES…

Q: Write and execute a SQL query to list all patient numbers and encounter ids which do not have any…

A: Actually, SQL stands for Structured Query Language.

Q: A) Give a one sentence description of the primary purpose of the Transport layer. B) Give a one…

A:

Q: 15. List the first name for all contacts and whether they have a spouse or not (yes/no). Order by…

A: Structured Query Language : SQL ( Structured Query Language) is an area explicit language utilized…

Q: Q1 Show all data from employee table where name should be in ascending and salary in descending…

A: Question 1 Ans : SELECT * FROM employee e  ORDER BY e.name ASC, e.salary DESC; Question 2 Ans :…