Question 1: Normalization   Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X has the following functional dependencies (X is one table with the attributes W, Y, S, M, F, E): WS è YMFE S è YME E è M   In what normal form is relation X? Explain why?   Is it possible to decompose X into a number of relations in order to achieve a higher normal form? Explain how (this means using English sentences and a diagram showing the final relation(s)).   officeNo officeAddress telNo mgrStaffNo name B001 8 Jefferson Way, Portland, ME 97201 503-555-3618 S1500 Tom Daniels B002 City Center Plaza, Seattle, WA 98122 206-555-6756 S0010 Mary Martinez B003 14 – 8th Avenue, New York, NY 10012 212-371-3000 S0145 Art Peters B004 16 – 14th Avenue, Seattle, WA 98128 206-555-3131 S2250 Sally Stern   Primary key: officeNo   Why the above table is not in 3NF? Describe and illustrate the process of normalizing the data shown in this table to third normal form (3NF). c) Identify the primary and foreign keys in your 3NF relations.

Q: R (x, y, z, m) Consider the following functional dependencies for a relation x -> (y, z, m), (x, m)…

A: Answer: {x}, {x,m} option 1 is correct.

Q: How do we decompose this relation to solve this problem?

A: An entity is an object in the real world with an independent existence that can be differentiated…

Q: Question1: Consider the Entity Relational (ER) schema of relation R= (A, B, C, D, E(E1, E2));…

A: Since this question has multiple subparts we will answer only three. If you want any specific…

Q: 2. Given the following relation and example data: Part_No Description 10010 20 GB Disk 10220 256 MB…

A: Given table contains six columns that include Part_No, Description, Supplier_No, Supplier_Name,…

Q: Consider the relation R = {A, B, C, D, E, F, G, H, I,J} and the set of functional dependencies F = {…

A: f ={     AB → C,      A → D,      B → F,  F → GH,  D → IJ   } To find the key check the RHS of the…

Q: Suppose R(A,B) is a relation schema with no constraints. Currently, R has 3 tuples: (1,2), (2,3),…

A: The correct option is (b) (1,9), (1,10), (2,10), (3,4)

Q: Consider the relation R with the following functional dependencies: R(P,Q, R, D, E, F) FD = {P >…

A: Given: Relation R with the following functional dependencies: R(P,Q, R, D, E, F) FD = {P > Q,QR →…

Q: # Question 1. Please select the correct statement(s) regarding a key constraint for a relation. An…

A:

Q: 5. Consider a relation R(A, B, C, D, E) with the following dependencies: AB → C, CD → E, DE → B

A: Given:  Consider the relation R(A,B,C,D,E) with the following dependency: AB -> C  CD -> E  DE…

Q: Consider a relation T with seven attributes ABCDEFG where AB is a composite primary key for T.…

A: The provided answer is

Q: Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E, CD->F,…

A: Explanation: Find the closure set of all the options given. If any closure covers all the attributes…

Q: Suppose R(A,B) is a relation schema with no constraints. Currently, R has 3 tuples: (1,2), (2,3),…

A: answer to the above question is in step2.

Q: QUESTION 8 Here's a relation (R), its attributes, and its functional dependencies (F): R(A, B, C, D,…

A: A functional dependency is defined as if in a relation A→B , the values in attribute A have the same…

Q: QUESTION 26 Consider a relation R(A B, C, D, E) with the following dependencies: AB-C, CD-E. DEB how…

A: Dear Student, A key is a candidate key if it's the minimum length key that can derive each…

Q: Consider the following set F of functional dependencies on the relation schema(A, B, C, D, E, G):A →…

A: The original relation is r(A,B,C,D,E,F). This relation is not BCNF due to the first functional…

Q: . Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E,…

A:

Q: Consider a relation R={A,B,C,D,E,F,G,H,I} with the set of functional dependencies and determine,…

A: Now we must determine the above definition whether for each FD. Each value is super key or not on…

Q: PLEASE TYPE IF POSSIBLE OR WRTIE ELIGIBLY  Consider a relation X with six attributes WYSMFE where…

A: Given: PLEASE TYPE IF POSSIBLE OR WRTIE ELIGIBLY  Consider a relation X with six attributes WYSMFE…

Q: Consider a relation schema R = {M, N, P, Q, S} and its functional dependency set F = {N → Q,S → M,M…

A: Given: R = {M, N, P, Q, S} F = {N → Q, S → M, M →P, P → S}   Rule to find Super Key in a relation…

Q: Draw the Dependency Diagram that is in 3NF for each relation. For each relation show the level of…

A: Although Second Normal Form (2NF) relations have less redundancy than those in 1NF, they may still…

Q: in a database system the functional dependency preservation within relations is critically…

A: If in a database system the functional dependency preservation within relations is critically…

Q: Given a relation R(F, G, H, I, J, K) and functional dependencies: • G-> FI • H> JK The candidate key…

A: Refer to step 2 for the answer.

Q: Consider the relation R = {A, B, C, D, E, F, G, H, I,J} and the set of functional dependencies F = {…

A:

Q: elation with proper steps followed. Explain in detail b) Identify which normal form this relation is…

A: Given : R(ABCDEF) ABC->D, ABD->E, CD->F, CDF->B, BF->D

Q: 2. Give a sample tuple that would violate the Entity Integrity constraint of any relation. Explain…

A: In Database Management System, the integrity constraints are the set of rules that is used to…

Q: Write a relational algebra expression that is equivalent to the following SQL statement: SELECT…

A: Given SQL statement is, SELECT AVG(SALARY) , COUNT(*) FROM EMPLOYEE WHERE  GENDER = 'M' GROUP BY…

Q: Answer the following questions about the relation R(a, b, c, d, e, f), with functional dependencies:…

A: Answer : R(a,b,c,d,e,f) a->f ab->cd c->e de->b bf->ae It  not violate any normal…

Q: 2- Consider the following relation and given functional dependencies: STORE ITEM (SKU, PromotionID,…

A: According to the information given:- We have to identify the candidate key and state the current…

Q: QUESTION 6 Consider the following functional dependencies for a relation R(A, B, C, D) A -> (B, C,…

A: A super key whose any proper subset is not super key is called candidate key.   closure table : (A)+…

Q: Given a relation R(W, X, Y, Z) and Functional Dependency set PQ = { WX -> YZ, X->Y }, determine…

A: According to the information given:- We have to define the given relation R(w,x,y,z) and functional…

Q: Computer Science Given these two relational schemas and sets of functional dependencies: 1)…

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

Q: Exercise 3.11 Suppose that we have a ternary relationship R between entity sets A, B, and C such…

A: Sql query find below !!

Q: 1. Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E,…

A: ABC->D, ABD->E, CD->F, CDF->B, BF->D A)  Closure(ABC) ={A, B, C, D, E, F} Therefore…

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

A:

Q: Choose the resultant relation(s) after transforming the below ERD. A2 A1 A3 ENTITY A Rel O A.…

A: A relationship between two entities of a similar entity type is called a recursive relationship.…

Q: Consider a relation such as sec course, generated from a many-to-one relationship set sec course. Do…

A: Let suppose a relation generated from a many-to-one relationship having primary and foreign key…

Q: Defined the relational algebra operations as follows: SELECT (p, R) is equivalent to σp(R)…

A: we have to write a SQL statement for the given relational algebra. PROJECT (<STUD_ID,…

Q: Consider a relation r(A, B, C), with an index on attribute A. Give an example of a query that can be…

A: Example: Consider a relation r(A,B,C) holding an index on attribute “A”. The query plans that only…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A:

Q: R (X, y, Z, m) Consider the following functional dependencies for a relation x -> (y, z, m), (x, m)…

A: The answer is x X generate all attributes. candidate key: A set of minimal attributes that can…

Q: Transitive Dependency. Give a good Example.

A: Defined the  Transitive Dependency and also relation T

Q: Consider the relation R (AA, Bb, Cb, Yy, Ee, Ff, Gg, Hh, Jj, Kk) for Naim Furniture Company with the…

A: Answer:- (C) FD3: Partial Dependency.

Q: Based on the given primary keys and assuming that Medicine and Contract relations are in 1NF,…

A: Medicine ( Medicine-ID, Medicine-Name, CountryID, CountryName) Here key for the relation is…

Q: Consider a relation such as sec_course, generated from a many-to-one relationship set sec_course. Do…

A:

Q: For relation (R), its attributes and its functional dependencies (F): R(A, B, C, D, E) C D → B A…

A: A relational schema R is considered to be in Boyce–Codd normal form (BCNF) if, for every one of its…

Q: a) Why is normalization important in database design?

A: Actually, Normalization is the process of organizing the data in tables in such a way that the…

Q: Question 1: Normalization Consider a relation X with six attributes WYSMFE where WS is a composite…

A: The given problem is related to database normalization where the relation X is given with its…

Q: Consider the relation r(A, B, C), where the characteristic A serves as the index to the…

A: Consider the relation r(A,B,C), which has an index on the attribute "A."