Can someone answer this AND write out the answers in relational algebra notation? The diagram illustrates a relational database schema for a LIBRARY database, demonstrating how different tables are structured and related to each other. Here's a detailed breakdown:1. **BOOK Table**: - Fields: `Book_id`, `Title`, `Publisher_name` - This table stores information about each book, including a unique identifier (`Book_id`), the book's title, and the publisher's name.2. **BOOK_AUTHORS Table**: - Fields: `Book_id`, `Author_name` - This table links books to their authors. Each record associates a `Book_id` with an `Author_name`.3. **PUBLISHER Table**: - Fields: `Name`, `Address`, `Phone` - Stores details about publishers, including their name, address, and contact phone number.4. **BOOK_COPIES Table**: - Fields: `Book_id`, `Branch_id`, `No_of_copies` - This table records how many copies of each book are available at various library branches, identified by `Branch_id`.5. **BOOK_LOANS Table**: - Fields: `Book_id`, `Branch_id`, `Card_no`, `Date_out`, `Due_date` - Manages the loan records of books, including the book and branch identifiers, the borrower's card number, the date the book was checked out, and when it is due back.6. **LIBRARY_BRANCH Table**: - Fields: `Branch_id`, `Branch_name`, `Address` - Contains information about each library branch, including its unique identifier (`Branch_id`), name, and location address.7. **BORROWER Table**: - Fields: `Card_no`, `Name`, `Address`, `Phone` - Stores data about borrowers, such as their library card number, name, address, and phone number.**Relationships between Tables**:- The `BOOK` table is linked to the `BOOK_AUTHORS` table via `Book_id`.- The `BOOK` table is also connected to the `PUBLISHER` table through `Publisher_name`.- `BOOK_COPIES` uses `Book_id` to relate to the `BOOK` table and `Branch_id` for the `LIBRARY_BRANCH`.- `BOOK_LOANS` links to `BOOK`, `LIBRARY_BRANCH`, and `BORROWER` using `Book_id`, `Branch_id`, and ` **Exercise 8.18**Consider the LIBRARY relational database schema shown in Figure 8.14, which is used to track books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 8.14, using the notation of Figure 5.7. Write down relational expressions for the following queries:a. How many copies of the book titled *The Lost Tribe* are owned by the library branch whose name is ‘Sharpstown’?b. How many copies of the book titled *The Lost Tribe* are owned by each library branch?c. Retrieve the names of all borrowers who do not have any books checked out.d. For each book that is loaned out from the Sharpstown branch and whose Due_date is today, retrieve the book title, the borrower’s name, and the borrower’s address.e. For each library branch, retrieve the branch name and the total number of books loaned out from that branch.f. Retrieve the names, addresses, and number of books checked out for all borrowers who have more than five books checked out.g. For each book authored (or coauthored) by Stephen King, retrieve the title and the number of copies owned by the library branch whose name is Central.

:: Solution:: 8.18 San Luis, CO 81134', '720-567-8910'); -- insert some sample values into the…

8.18. Consider the LIBRARY relational database schema shown in Figure 8.14, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 8.14, as in the notation of Fig- ure 5.7. Write down relational expressions for the following queries: a. How many copies of the book titled The Lost Tribe are owned by the library branch whose name is 'Sharpstown'? b. How many copies of the book titled The Lost Tribe are owned by each library branch? c. Retrieve the names of all borrowers who do not have any books checked out. d. For each book that is loaned out from the Sharpstown branch and whose Due_date is today, retrieve the book title, the borrower's name, and the borrower's address. e. For each library branch, retrieve the branch name and the total number of books loaned out from that branch. f. Retrieve the names, addresses, and number of books checked out for all borrowers who have more than five books checked out. g. For each book authored (or coauthored) by Stephen King, retrieve the title and the number of copies owned by the library branch whose name is Central.

8.18. Consider the LIBRARY relational database schema shown in Figure 8.14, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 8.14, as in the notation of Fig- ure 5.7. Write down relational expressions for the following queries: a. How many copies of the book titled The Lost Tribe are owned by the library branch whose name is 'Sharpstown'? b. How many copies of the book titled The Lost Tribe are owned by each library branch? c. Retrieve the names of all borrowers who do not have any books checked out. d. For each book that is loaned out from the Sharpstown branch and whose Due_date is today, retrieve the book title, the borrower's name, and the borrower's address. e. For each library branch, retrieve the branch name and the total number of books loaned out from that branch. f. Retrieve the names, addresses, and number of books checked out for all borrowers who have more than five books checked out. g. For each book authored (or coauthored) by Stephen King, retrieve the title and the number of copies owned by the library branch whose name is Central.

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

See similar textbooks

Similar questions

Let R₁ and R₂ be the relations on X={a,b,c}, R₁={ (b,a), (c,b), (a,c) } R₂={ (a,c), (b,c)} R₁-¹= R₂ ° R₁=
QUESTION 17 Answer All the questions: Consider the below Student table and write the appropriate relational algebra query: SID SNAME SLNAME 1001 Mariam AI Alawi 1002 Sara 1003 Rahma Al Ruzaiqi 1004 Busma Al Mammari 23 1005 Salim AGE CID City CNAME ITDR2106 Introduction to Database Sur ITDR2104 Programming ITDR1101 Introduction to IT 20 Al Salti 22 Sohar 22 Muscat ITDR2104 Programming ITSW3101 App. Sw. Development Muscat Al Busaidi 24 Muscat Find the name of the students and the city name whose age is above 20 years and below 24 years?
QuestionsWrite SQL statements that will answer the following four questions based onthe following tables.1. Find suppliers (company name, country and city) whose country isAustralia or whose city is Paris.2. Compute the extended price for each order. Extended price is obtained bymultiplying unit price by quantity (from Order Details table). Show order id,product name and extended price. Sort the results by product name inascending order.3. List products ids and product names of discontinued confection productsthat are still held in stock. (Confection products are those that have"Confections" as category name.)4. Find the total quantity of each product ordered within each category.Display the category id, category name, product name and total quantity. Hints:The MONTH(DateField) function can be used to evaluate criteria about the month portion of adate field.The FORMAT(DateField) function can be used to return the month names.The SELECT statement has several options that can be used…
The reader to formulate some sample queries as relational algebra ex-pressions. (By way of an interesting variation on these "query" exercises, the reader might like to try looking at some of the answers first and stating what the given expression means in English.) 1. Get full details of all projects in London. 2. Get supplier numbers for suppliers who supply project J I. 3. Get all shipments where the quantity is in the range 300 to 750 inclusive. 4. Get all pan-color/part-city combinations. Note Here and in subsequent exercises, the term "all" is to be taken to mean "all currently represented in the database," not "all possible."
Describe the basic operations of relational algebra in simple terms.
can yaou make one example of one table about anything that the table is the example of transitive dependecy
1) Find names of those departments, each of which has at least two same-aged employees. 2)List names of those departments each of which has an employee named ‘Joe’. 3)List the names of employees, each of whom has salary more than the budget of the department he/she works in. Answer the above questions in relational algebra with reference to the following relational schema. Key fields are bold. Emp (eid:integer, ename:string, age:integer, salary:real)Works (eid:integer, did:integer, pct_time:integer)Dept (did:integer, dname:string, budget:real)
Question 35 If there are several operators with same priority in an arithmetic expression of an SQL statement then the priority will be For division for multiplication From left to right For addition
For the following Relational Algebra / SQL statements, specify the output of each query. (do not explain how each query will be executed, but specify the output to be obtained when the query is executed). (c) R1: ACTORS WHERE YearOfBirth < 1940 OR Gender = 'female' R2(SSNo, FName, LName): R1 [ SSNo, FName, LName ] R3: R2 NATURAL-JOIN ACTEDIN OVER SSNo C: R3 [ LName, Character ] (d) SELECT A1.FName, A1.LName, A1.YearOfBirth FROM ACTORS A1, ACTORS A2 WHERE A1.YearOfBirth = A2.YearOfBirth AND A1.SSNo != A2.SSNo (e) R1: ACTEDIN [ FilmNo, SSNo ] R2: FILMS WHERE FilmTitle = 'Unforgiven' [ FilmNo ] R3: ACTEDIN NATURAL-JOIN R2 OVER FilmNo [ SSNo ] R4: ACTORS NATURAL-JOIN R3 OVER SSNo [ SSNo, FName, LName ] R5: ( R1.SSNo ÷ R4.SSNo ) [ FilmNo ] C: ACTEDIN NATURAL-JOIN R5 OVER FilmNo [ FilmTitle ] (f) SELECT A.FName, A.LName, COUNT(*) FROM ACTORS A, ACTEDIN AI WHERE A.SSNo = AI.SSNo GROUP BY A.SSNo, A.FName, A.LName HAVING count(*) > 2 OR count(*) = 0
After executing a Cartesian product of student and advisor, followed by a selection operation on the result with the predicate s id = ID, what is the outcome of the operation? When stated in relational algebra's symbolic notation, this query may be represented as s id=ID(student advisor).
Write an SQL query that will return only the names of those employees who appear in the overlapping region of the diagram. Note that you will not be able to test it in MySQL. Write an SQL query that will return the names of all employees who have purchased items (are Customers too). Note that you will not be able to test it in MySQL
explain the topic of Relational algebra Selection and Projection