Solve only 1,2,3 please fast.       Consider the following scheme   Supplier (sid, Sname, rating)   Parts (Pid, pname, color)   Catalog (sid. Pid, cost)   The catalog relation lists the prices charged for parts by suppliers.   Write the following queues in relational algebra. (i) Find name of suppliers who supply some red part.

Q: So SQL does not suppor functional depency constraints. However, if the database system supports…

A: Step1:Functional dependency is a constraint the relationship between attributes in a relation.…

Q: Consider the relation schema R (A, B, C, D, E). Find number of super keys if A, CD and BE are the…

A:

Q: has two relations ch a is the primary is the primary key nce of P has 70 Tup s 42. What is the m in…

A:

Q: the database relation R(a, b, d, e, f) ribute b and d are dependent only on a; e ly on d; and fonly…

A: The functional dependency possible are a -> b, d d -> e, f Here if we take closure of a, that…

Q: For each part of this problem you will need to construct a single SQL query which will check whether…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Three relational schemas are given below. • Patient (patientID, name, address, age) Doctor…

A: 1. Query: Using inner join: ΠPatient.patientID(σDoctor.yearsExperience>15 and…

Q: Question: Consider the relation: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q), {A, B} is the…

A: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q) Candidate key: {A, B}, {C,D,E}Prime attributes Non…

Q: This article describes three situations when using a surrogate key instead of the connection key is…

A: A surrogate key is a fictitious primary key used to uniquely identify a record in a database table.…

Q: Consider the follow relations’ schemas to answer the following question:  Student (sid, name,…

A: Convert SQL to relational algebra expression

Q: Consider the relations Student(name, Marks) and Teacher(ID, name, Salary) in which name is the…

A: According to natural join, if more than one attribute is in common then natural join selects only…

Q: Consider the following scenario: you have a relation that contains x, y coordinates, and the names…

A: Introduction: Consider the names of the restaurants and the x and y coordinates associated with the…

Q: database relation R into relations R₁ and R₂, we want R₂ MR₂R so that no tuples in R is lost. This…

A: In other words, lossless decomposition is a way of normalizing a database by breaking down a large…

Q: Describe how you would deal with the relation type M:N using a practical example.

A: MANY-TO-MANY (M: N) RELATIONSHIP: Many-to-Many relationship refers to the relationship between two…

Q: Relation Schema: o (Selection) | T (Projection) | N/U7- (Set operations)| M (Join operation)…

A: The question given above is the multipart question. We will solve the first three for you, if you…

Q: Database Systems For each part of this problem you will need to construct a single SQL query which…

A: Answer is given below

Q: r the following relation : Age 9 18 11 10 Sname Vikas Shreya Megha Rajan

A:

Q: oximiation, and how can it be performed using fuzzy rel

A: Introduction: Below describe the approximation and how can it be performed using fuzzy relation?

Q: Given relations P and Q, both over attributes A and B, write a query in relational algebra under bag…

A: Q is always contained in the answer to P.

Q: ER-diagrams are high-level design of the Database. The given ER-diagram describes the Dentist…

A: Weak entities are represented with double rectangular box in the ER Diagram      office, supplier,…

Q: Give two examples of a relation and their candidate key

A: Candidate key :                          A candidate key is a set of characteristics that uniquely…

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: Creating the table – CREATE TABLE works(ID number, works_name text, salary number);   Inserting the…

Q: We have the following relation: Subscriptions(ID, startingdate, length, customerID, customerName,…

A:

Q: Suppose you have a Relation that has an atomic Primary Key and noRepeating Groups. All non-key…

A: According to the details provided about the relation, the relation is in 2NF. This relation has to…

Q: Relational model: In the personal model, data are prearranged in tables, which contain of table. A…

A: Explanation of Solution Importance of relational model: Relational model is important, due to the…

Q: The p operation eliminates duplicate tuples in the resulting relation. So: p Gender, Salary…

A: The question is ambiguous, it can't be determined if the user wants to remove all the duplicates…

Q: For each of the following pairs of expressions, give instances of relations thatshow the expressions…

A: Right Outer Join: When two tables are joined using Right Outer Join, all the records from the second…

Q: (vii) Find pair of sids such that the supplier with the first sid charges more for some part than…

A: Solution :  Given , schema  Supplier (sid, Sname, rating) Parts (Pid, pname, color) Catalog (sid.…

Q: The intersection operation can be applied to only union-compatible relations. (a) True (b)False

A: Two relations (or tables) are said to be "union-compatible" if they meet certain criteria that allow…

Q: Could you tell a step by step procedure of finding a super key for A relation R(A,B,C,D, E) having…

A: Solution - In the given question, we have to find the super key of the given relation R(A,B,C,D,E).…

Q: the following ER diagram into a relational database schema. dID CID Director Cinema fullIName…

A: The Answer is

Q: a = sqrt (log ( sqrt ( x + y ) ) )

A: Based  upon expression where a =sqrt (log (sqrt (x+Y))) .here finding expressions based on…

Q: Consider the relations Student(name, Marks) and Teacher(ID, name, Salary) in which name is the…

A: Natural join joins two table based on common attribute.

Q: Consider the following scenario: you have a relation that contains x, y coordinates, and the names…

A: Lets consider the names of the restaurant with x and y coordinates that have a relation to answer…

Q: For each of the following pairs of expressions, give instances of relations thatshow the expressions…

A: R = {(1, 2)}, S = {(1, 3)}

Q: A relational database has the following schema: Customer (Cno, name, address, age, loan_type,…

A: Sigma operator is used for selecting record. Project operator

Q: cher(ID, name, S ary key of the re ary of the relatic relation is 300 a maximum size

A:

Q: List functional, partial and transitive dependencies if exists in the table given in Figure 01.…

A: The solution is given below.

Q: id name supervisor A John Joyce Jim Jennifer Peter D null E C E Write an SQL statement to list any…

A: We can achieve the desired result by doing self join of the Employee table

Q: For developing our queries, we will be using the following relational schema: Student(SID, name,…

A: Q1.  Here we need to join relation Course and Offering and use selection operator to select only…