2. Show the results of the following operations given in relational algebra. A a1 a2 a3 a4 2 3 4 1. 8 12 5 4 2 12 4 B b1 b2 b3 2. 4 3 4 12 11 4 2 11 c1 c2 4 4 4 4 12 4 7 7 7 12 Ax(OB.b2>10B) 1. 2. AA.a3-B.b2 B AX A.a4=B.b3 3. AN (A.a1=B.b1 AND A.a3=B.b2) B 4.

Q: Show the results of the following operations given in relational algebra. A а1 a2 a3 а4 2 3 4 5 1 8…

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

Q: Write the following queries in relational algebra Customer (sid, name, career) Commodity(cid,…

A: Objective: Given three table schema  Customer (sid, name, career) Commodity(cid, title) Price (sid,…

Q: Solve only 4,5,6 . Please fast.   Consider the following scheme Supplier (sid, Sname, rating)…

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

Q: -Given the following relational DB schema and the following SQL query: Student (sid, name, age,…

A: Answer: The physical query plan for the above query. Assumptions: No indexes and data is not sorted…

Q: The following SQL statement can be expressed in Relational Algebra as... Select P.Type, S.CID From…

A: I have provided a solution in step2.

Q: Question 3. . Consider the following two command C1 and C2 on the relation R from an SQL database:…

A: DROP TABLE: DROP TABLE statement is used to drop an existing table in a database.  Syntax is  DROP…

Q: Assume that R is a relation on {1, 2, 3, 4} defined as follows: a R b if and only if a + b is an odd…

A: As the relation is possible when the sum of values in a pair is a odd value.

Q: Q1:- 1- Find superkeys, candidate keys, primary keys, alternative keys in the following CAR relation…

A: Candidate Key: A candidate key refers to a column or combination of columns which uniquely…

Q: Q1. Let set A= {4, 8, 12, 16). Following are the relations defined on A x A: R1= {(4,4),(8,8),…

A: Here in this question we have given a set ={4 ,8 ,12 ,16} and we have given four relation and asked…

Q: Write the following queries in relational algebra Customer (sid, name, career) Commodity(cid, title)…

A: In relational algebra σ is used to select operation σname="Networks"Books will return the tuples of…

Q: Is it possible to have two orders for the same customer? O No, viðlates entity Integrity constraint…

A: The given tables are: Customer: Where CustomerID is primary key Order: Where OrderID is primary key…

Q: Question 1 - Apriori Algorithm - Given the following transaction database: Transaction ide Itemse…

A: a) Given minimum support = 50%. Total number of items = 5 So, minimum support count = (number of…

Q: Given the following matrix, which of the following relations is represented by the matrix? Assume…

A: The answer represent the nodes where the value 1 exist in the matrix. so the nodes of 1 are…

Q: he database relation R(a, b, d, e, f) ibute b and d are dependent only on a; e y on d; and f only on…

A: The functional dependency possible are  a->b, d d -> e, f Here a is primary key for the given…

Q: B. By determining whether each relation on the set A = {1,2,3,4} possesses the types of relation in…

A: R is reflexive if for all x  A, xRx. R is symmetric if for all x,y  A, if xRy, then yRx. R is…

Q: Exercise IV: (a) Given the following relational database schema: R= AB S= BC 2 2 2 21 3 3 Provide…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Consider the given schema and answer the questions. Q(a,b), R(b,c), S(b,d), T(b,e). a) For the…

A: Answer: a) i. πa(σc=3(Q ◃▹b=b (R))) ii. πa(Q ◃▹b=b σc=3(R)))

Q: Please answer question 2

A: The domain constraint would be violated since the number is not allowed in the place of a name. The…

Q: This question assumes the following relational schema: Employees(employeeNumber, lastName,…

A: the corresponding sql query is given below

Q: Suppose that you are given a relation R = (A,B,C,D,E) with the followingfunctional dependencies: {CE…

A: CE->D D->B C->A CD->A Attribute Closure CEA+->CEADBCEB+->CEBDACED+->CEDBA So…

Q: 3. What will be the height of the following recurrence relations? a. T(n) = T (=) + T + cn b. T(n) =…

A: Answer: I have given answered in the handwritten format.

Q: Q2: When the following FDs are defined in R(A, B, C, D), А — D, CD — В, А —— С (1) Identify the…

A: Defined the given functional dependencies

Q: Consider the given bank database. Compose SQL Queries for each of below scenarios.…

A: e) this is mixture of question b) and d) i.e first select customer_names who have balance greater…

Q: Let R(A, B, C, D, E, F) be a relation with FD's: {D → C, C → D, D → E, C → E, E → AD, AF → E, D → B}…

A:

Q: How many valid keys are in the following model? A Fully trusted entity Partially trusted entity B C…

A: Given:

Q: The following question is based upon the Patient-Treatment relation which records the details of…

A: the Patient-Treatment relation which records the details of transactions occurring in a medical…

Q: Given the grocery store transactions example with minimum support = 33.34% and minimum confidence =…

A:

Q: A database has four transactions, given below, TID Date items_bought T10 1/10/2021 {K, A, D,…

A: The support and confidence are the association analysis for the performance measure. Support is all…

Q: Figure Q3.13 The Ch03_VENDINGCO database tables Table Name: BOOTH     BOOTH _PRODUCT BOOTH…

A: Relational algebra is a procedural query language. It gathers relations’ instances as input and…

Q: Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T}…

A:

Q: Consider the following parameters of a relation r (A, B, C) in which A be the primary key. nr =…

A: Answer: I have given answered in the handwritten format

Q: Figure Q3.13 The Ch03_VENDINGCO database tables Table Name: BOOTH    BOOTH _PRODUCT BOOTH…

A: The results of the two tables can be combined and this is done with the help of the UNION operator…

Q: Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T}…

A: Answer : { T , N } is a key of Relation R .

Q: The following question is based upon the Patient-Treatment relation which records the details of…

A: Step 1:- Note:- I am giving the solution to the 1 question only. The given question contains the…

Q: 1 a -[ ] ab - [ ) s for i in (Data.head(200) and Data1.tail(200)): 16 if i[-2] not in a:…

A: Here, it is a syntax error. Since += can't be write with spaces. so, here you are writing it with…

Q: 2. Consider the following schema: Books (book_id, title, year, pub_id, auth_id, price)…

A: Note : As per guidelines of the company, we are authorized to answer 3 sub parts of a question. Thus…

Q: SOLVE THE BELOW PROBLEMS CONSIDERING GIVEN TABLES. PK EMP FK EMPNO ENAME MGR DEPTNO SAL COMMISSION…

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

Q: Answer the following questions based on the transaction data of a sports shop shown in Table 5.…

A:

Q: Following is the 3 by 3 ( number of rows = 3, number of columns = 3) matrix representation of…

A: Required:   Following is the  3 by 3 ( number of rows = 3, number of columns = 3) matrix…

Q: 23. For the following excerpt from an ERD, specify the logical (relational) schema as per the…

A: given diagram is ER diagram. There are two tables  One is SALSESPERSON. second is VEHICLE.…

Q: 1.Find the marks in increasing order of all students a) SELECT reg#, marks FROM student ORDER BY…

A: Given that 1.Find the marks in increasing order of all students a) SELECT reg#, marks FROM student…

Q: This is the problem Create a complete ERD in Crow’s Foot notation that can be implemented in the…

A: The entities in the ER Diagram are: MANUFACTURER BRAND MODEL The attributes for entities are given…

Q: Consider a database containing two relations: R(A,B,C) and S(D,E,F).  For each of three (your…

A: The required diagram is as follows: Explanation Please refer to solution in this…

Q: Figure Q3.13 The Ch03_VENDINGCO database tables Table Name: BOOTH     BOOTH _PRODUCT BOOTH…

A: The relational algebra formula to apply an INTERSECT relational operator to the given tables is as…

Q: 1 a-1 for i in (Datai.head(200) and Datal.tail(200)): if 1(-2] not in a: a. append(i[-2]) b.…

A: It is defined as an interpreted, object-oriented, high-level programming language with dynamic…

Q: A QUESTION 6 Consider the following database schema for a library. Book (BookID:int,…

A: The instances in a database schema, as well as their relationships, are described by the schema. It…

Q: a) Based on the following table and its functional dependencies, explain why the table is NOT in…

A: Required:

Q: Consider the relation schema R=VWXYZ, with the set of functional dependencies F = {VW->XY, V->X,…

A: Given, The relation schema R=VWXYZ, with the set of functional dependencies F = { VW → XY, V → X, W…

Q: 3. How many non-trivial FD's may exist on relation S(A, B)? (a) 1 (b) (c) 3 (d) 4

A: First let's understand what is non trivial FD's . There are 2 conditions for that- 1. A-> B 2. B…