The table R(x,y) currently has the following tuples (note there are duplicates): (1,2), (1,2), (2,3), (3,4), (3,4), (4,1), (4,1), (4,1), (4,2). Compute the result of the query: SELECT R1.x, R2.y, COUNT(*) FROM R R1, RR2 WHERE R1.y = R2.x GROUP BY R1.x, R2.y; Which of the following tuples is in the result? O a. (3, 4, 6) O b. (3, 2, 6) O c. (3, 2, 2) O d. (4, 3, 2)

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: Given a table students in SQL. Write a SQL query to add a column Address Varchar(30) in the student…

A: Given Table: students  We have to add a new column Address Varchar(30) to the given table students.…

Q: 10. When we find out that there are some miss spellings in the query?

A: Given: Where did we discover certain misspellings in the SQL query?

Q: Write a query to list the first name and last name of all authors. Concatenate the first and last…

A: The SQL query is: SELECT CONCAT(CONCAT(firstname,' '),lastname) AS FullName FROM author;…

Q: had dout in datastructures: Create the given table and implement the queries: OrderNo PurchaseAmt…

A: CREATE TABLE Purchases(  OrderNo int  primary key,   PurchaseAmt real,   OrderDate date,…

Q: II name(o dept_name ="Physics" (instructon)

A: In relational algebra expression, the SELECT operation (σ) is used to select a subset of the tuples…

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: Fill in the blanks('x') of this nested query to show the countries in EUROPE with a per capita GDP…

A: Hi. Let's move on to the complete SQL command in the next step.

Q: SQL Sales people must be trained to make orders. For a sales person to receive credit for an order,…

A: Given order and training table,  we need to write a query that finds all orders where the…

Q: Find the output of the following query. SELECT LENGTH(REPLACE ('FINALEXAM FINALEXAM, F;"TAN')) FROM…

A: Answer : the Given SQL Output is 23 : Because string will replace 'F' to 'TAN' so, the final string…

Q: Below is the answer that I have but it is incorrect can anyone help?     select PROJ_NUM,…

A: Here you have simply used the ROUND(value,2) function. This will simply round the value to 2 places…

Q: Consider an Animal table with the following columns: • ID - integer, auto increment, primary key •…

A: In SQL, queries are used to interact with databases, including making updates to existing data. The…

Q: 1) Does proper indexing make it possible for some join queries to not need to retrieve a table entry…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: ind all the Nobel laureates, with the year of the award, who were born either in Poland (present but…

A: The query is needed to supplied in SQL.

Q: 1. Write a query to create the "Student" table (SID, Sname, SAge, SDept, SCity), where the Student…

A: SQL is used to access the rows from the relational database. As we know that relation is made up of…

Q: Write a query to get the number of different types of jobs available in the university table.…

A: Functions used in Query: The LIKE operator is used to search for a specified pattern in a column.…

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: This is supposed to return one Cartesian table right? What does the a and b represent here since…

A: Given SQL statement is, Select * from Employee As a, Employee As b; Here Employee is name of the…

Q: Specify the initial canonical query tree that corresponds to each query. 1) SELECT…

A: Given that SELECT AVG(CUSTOMER.AGR) AS "AVG_AGE" FROM CUSTOMER; in the above query customer table is…

Q: Construct a SQL query, using REGEXP_REPLACE, which will return all rows from project table which…

A: Question- SELECT id,REGEXP_REPLACE(title,'[0-9]','Z')AS title,start_date,end_date,budget FROM…

Q: There are ten columns in the table "customer," yet there is no row. A total of 10 new rows are added…

A: TipA table is a list of connected data kept in a database in table format. A table in relational and…

Q: What is the result of the query below? SELECT * FROM table1 WHERE val1 IN (SELECT vall FROM table1…

A: A SQL query is a high level English sentence used to work with a database which could be the…

Q: Write a query that Balance of each CUSTOMER who have made purchase(s) before AND subtotal that each…

A: Sql which means structured query languages and it is a domain-specific language used in programming…

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: Give a query that would benefit from each of the three methods of partitioning: round-robin (the…

A: Consider, for each of the three partitioning approaches, round-robin, hash partitioning, and range…

Q: line and the results T TRANSACTION; TE FROM people I CT COUNT(*) FROM ЗАСК;

A: DELETE command will delete the row from people table where id=2. Hence, row 2 JENNIFER PARKER NULL…

Q: 1. Write a SQL query to list first name, last name and rank of only professors whose rank is…

A: According to Bartleby Guidelines we need to answer only one question so I have answered first…

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: Alter mapping the following ERD, choose the correct SQL statement that will insert a single record…

A: "Since you have asked multiple questions, we will solve first question for you. If you want specific…

Q: 1. Write a query that finds all orders where the salesperson did not have an active training on the…

A: Given order and training table, We need to write a query that finds all orders where the salesperson…

Q: Harita was asked to compute the average salary of all employees from the EMPLOYEES table she created…

A: In order to calculate the miscalculated average where the salary didn't contain 0's, we can use…

Q: ?- checkeven(12). Your answer_ ?- checkeven(11). Your Answer ?- 10=\=8+3. Your Answer:

A: As per our guidelines, we are supposed to answer only 1st three parts. Kindly repost the remaining…

Q: Write a query to display the brand ID, brand name, and average price of products of each brand. Sort…

A: Database management language: The database management system is a collection of inter-related data…

Q: ou will produce a query result set of Products that have a P_PRICE (Price) that is greater than the…

A: The given problem is to be solved in SQL where the Products table have an attribute named P_PRICE.…

Q: - Write SQL statement to list the OrderID, CustName and OrderDate from Orders table using INNER JOIN…

A: The solution for the above given SQL question is given below:

Q: You have two tables teachers and students. Each student belongs to a teacher. Complete the query to…

A: SQL (Structured Query Language) can be defined in such a way that it is a programming language…

Q: Briefly explain the difference between a nested if statement and a lookup function using a lookup…

A: Given: Briefly explain the difference between a nested if statement and a lookup function using a…

Q: At UFL, each class is a specific offering of a course (subject). Each row in the Courses table…

A: At UFL, each class is a specific offering of a course (subject). Each row in the Courses table…

Q: Why may this statement return an error? * Review this SQL Statement: SELECT ename, emp_number,…

A: Why may this statement return an error. SQL statement: SELECT ename, emp_number, salary FROM…

Q: How do we avoid getting duplicate entries in a query?

A:

Q: The query optimizer constructs an initial query tree using join, selection, and projection…

A: A query optimizer is a critical component of a relational database management system (RDBMS)…

Q: a. What is the result of this query: SELECT AVG (S.rating) FROM Sailors S b. What is the result of…

A: Answer : a) the result of this query:SELECT AVG (S.rating)FROM Sailors S The result will be the…