Problem 1 Convert the following relation to 2NF, and then to 3NF. Show both conversions. (h, n, c, a, f, k, p, r, g, i, m, b, o, d, j, I, s, e) Functional Dependencies: m, b >I n >o p>o a >r h >g c>i h >d
Q: Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E, CD->F,…
A: In this question, we are given a relation with set of functional dependenciesR(ABCDEF)ABC->D,…
Q: QUESTION 6 There will be three tables after converting the following conceptual diagram into the…
A: 6) Answer :-- False It will converted into two table table A with two fields named field1 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: 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: 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: Given the following relation schema R(B, N, O, A, T, C) and the set of functional dependencies F =…
A: F = {C-->OT, O-->AC, CN-->B, CB-->A, B-->N}: R(B, N, O, A, T, C)
Q: Consider the relation R(O,P,X,Y,E, S); FDs={ O=P, XY=O, OE=S, EY=X, PY=X} What is the dependency…
A: Given Relation R contains attributes O, P, X, Y, E and S. The functional dependencies present in…
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: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…
A: The provided answer is
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: Question 10. Consider the relation R (ABCDE) and functional dependencies set {A highest normal form…
A: Steps to find highest normal form of relation: Find all possible candidate keys of the relation.…
Q: . Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E,…
A:
Q: Consider R(A,B,C,D) and Functional dependencies A -> B, B -> C, C-> D, D -> B. Following…
A: Given:
Q: Consider the relation schema R (A, B, C, D) with all possible functional dependencies. For each of…
A: 1. A, C -> B, D C -> D Here the key for the relation is (AC) The FD C->D is a partial…
Q: Consider a relation schema R = {A, B, C, D, E, F, G} with the following set of functional…
A: A relational schema R with the set of functional dependencies
Q: Question 6. Consider the relation R(ABCDE) and its functional dependencies set {AB->C, C->E, B-> D,…
A: Answer of the given question: choice (d) is the correct answer. Lossless Decomposition: Lossless…
Q: Computer Science Given the relation R (A, B, C, D, E, F, G) and the set of functional dependencies:…
A:
Q: Convert the following relation to 2NF, and then to 3NF. Show both conversions. Remember to include…
A: FIRST NORMAL FORM (1NF) : It does not eliminate redundancy, but rather, it’s that it eliminates…
Q: Let R(A, B, C, D) be a relation with FD's: A → B, C → D, AD → C, and BC → A. If we decompose R into…
A: Answer to the above question is in step2.
Q: Consider the relation R = {F, T, D, N, S} and the set of functional dependencies K = {F¬D, {D, T}…
A:
Q: Convert the following relation to 2NF, and then to 3NF. Show both conversions. (h, n, c, a, f, k, p,…
A: Solution :: functional dependencies: p-->j,m; b-->l; h-->g; n-->p; n-->o;…
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: Consider a relation schema R = (X, Y, Z) on which the following functional dependencies hold: {XY →…
A: Here in this question we have given a relation schema R = (X, Y, Z) on which the following…
Q: Consider the relation R = {A, B, C, D, E, F, G, H, I,J} and the set of functional dependencies F = {…
A:
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: a ->f ab -> cd C->e de -> b bf -> ae a) Identify the weakest normal form that each of these…
A: A) Primary key is ab. The functional dependency a->f is a partial functional dependency. It…
Q: Consider a relation schema R = (X, Y, Z) on which the following functional dependencies hold: {XY →…
A:
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: Question 2 1. Given R (A, B, C, D, E, F) and the following set of functional dependencies: F =…
A: As per our guidelines, we are supposed to answer only 1st three parts. kindly repost the remaining…
Q: Question 10. Consider the relation R (ABCDE) and functional dependencies set {A → B, B → C, C → D, D…
A: In this question 10, we are given a relation R and set of functional dependencies. We are asked the…
Q: Consider the Relation R4 = (A,C,B,D,E,F), with Functional Dependencies: A -> B, C -> D, E -> D. What…
A:
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: Given: 1. The universal relation schema Q(CTHRSG), where C = course, T = teacher, H = hour, R =…
A:
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: Based on the following relational schema and functional dependencies, 1. Find (show all steps)…
A: Here attributes that are not available on the right side is, a) B,E Now find the closure of the BE…
Q: Identify all the functional dependencies in the following relation with columns A, B, C, and D…
A: a.A→B : doesn't hold. Since values that repeats in A doesn't have same value in B b.A→C : doesn't…
Q: Consider a relation schema R = (X, Y, Z) on which the following functional dependencies hold: { XY →…
A: Here in this question we have given a relation schema R = (X, Y, Z) on which the following…
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 a relation schema R = (X, Y, Z) on which the following functional dependencies hold: { XY -…
A: Here in this question we have given a relation schema R = (X, Y, Z) on which the following…
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: All parts of this question use the relation R = (ABCDEG) with the set of functional dependencies F…
A: 1) The given relation is : R = (ABCDEG) The given set of functional dependencies F is : A→BC AD→G…
Q: List all nontrivial functional dependencies satisfied by the relation of Figure 7.18.
A: NON-TRIVIAL FUNCTIONAL DEPENDENCIES: Functional dependency refers the concept in which one…
Q: xercise 8.1.4: Arrow diagrams for relations on small finite sets. Draw the arrow diagram for…
A: Actually, given question regarding finite sets.
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: QUESTION 9 A relation R(M, N, O, P, Q) is in 2NF and has the following functional dependencies: • MN…
A: Dear Student, As MN derives O and O derives P and also Q thus MN derives M,N,O,P,Q. Thus MN is a…
Q: the above relation (with proper steps followed). b) Identify which normal form this relation is in
A: Given functional dependencies as, R(ABCDEF)AB->CD, CD->EF, BC->DEF, D->B, CE->F
Q: Consider the following set F of functional dependencies on the relation schema(A, B, C, D, E, G):A →…
A: The given set of functional dependencies are: (A, B, C, D, E, G):A → BCDBC → DEB → DD → A Now, we…
Q: Question 2 Composite relations can be thought of as composite functions. If S is a relation from set…
A: As per guidelines we can answer only one question at a time for answers of other question ask…
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- Using a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.Suppose relations R(A,B) and S(B,C,D) are as followsIntroduction to database systems Question: Create an ER diagram relational schema and queries of a charity donation application that has classes as follows: Donor(name, address, mobile number, email) with subclasses: DonateMoney(name, amount, card number,security code) and DonateOther(item, name, address, mobile number, email), Volunteer(name, address, mobile number, email) and Organization(name, address, mobile number, email). The description of the application is as follows: the user can either donate money or donate other such as food, clothes,books, etc where he/she will have to first select the organization he/she is willing to donate to and then fill in the required information. The user could also volunteer by selecting what organization he/she wants to volunteer to and filling in the required information.
- 16 We would like to design a database to maintain information about COURSES in a Faculty. Each COURSE has a code, name number of credit hours and the department that offers it. A COURSE may have zero, one, or many prerequisite COURSES. A COURSE may be a prerequisite for zero, one, or many COURSES 2"What is the degree of the relationship type'prerequisite of a. A unary (recursive) relationship O b. A binary relationship cA ternary relationship O d. This relationship is NOT exist OSuppose we have a relational database with five tables. table key Attributes S(sid, A) Sid T(tid, B) Tid U(uid, C) Uid R(sid, tid, D) sid, tid tid, uid Q(tid, uid, E) Here R implements a many-to-many relationship between the entities implemented with tables S and T, and Q implements a many-to-many relationship between the entities implemented with tables T and U. A. Write an SQL query that returns all records of the form sid, uid where sid is the key of an S- record and uid is the key of a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. B. Write an SQL query that returns records of the form A, C where the A-value is from an S- record and the C-value is from a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. C. Could one of your queries from parts (a) and (b) return more records than the other? If so, which one? Justify your answer. D.…Create a relational database design for the following data model
- WRITE THE CODE OF MYSQL IN PYTHON Create database and tables as given below by using Python. (a) Market database (b) Vendor: vendor_id integer, vendor_name varchar, license_start date, license_end date (c) Item: item_id integer, item_name varchar, item_type varchar, previous_price float, last_sold_date date (d) Auction: auction_id integer, vendor_id integer, item_id integer, price float Choose primary and foreign keys depending on the relations in Market database design.Suppose we have a relational database with five tables. table key Attributes S(sid, A) Sid T(tid, B) Tid U(uid, C) Uid R(sid, tid, D) sid, tid Q(tid, uid, E) tid, uid Here R implements a many-to-many relationship between the entities implemented with tables S and T, and Q implements a many-to-many relationship between the entities implemented with tables T and U. A. Write an SQL query that returns all records of the form sid, uid where sid is the key of an Srecord and uid is the key of a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. B. Write an SQL query that returns records of the form A, C where the A-value is from an Srecord and the C-value is from a U-record and these two records are related through the relations R and Q. Use SELECT and not SELECT DISTINCT in your query. C. Could one of your queries from parts (a) and (b) return…Q. The database interface of a library allows searching only for a single attribute (such as Titleor Author ) in each query. Your friend decided to extend it's functionality and wrote an algorithm that allowssearching for books that satisfy multiple predicates over single attributes in conjunction. He tells you the algorithmreuses the already implemented query functionality and works by intersecting the results ( book id's ) of queriesover single attributes.Which of the following assumptions on your friend's algorithm are plausible?a) Its worst-case run-time necessarily increases exponentially with respect to the number of attributes in thequery.b) Its worst-case run-time depends on the length of the longest result of the single-attribute queries.c) It might be implemented using an join.d) It might be implemented using sorting.
- Design an E-R Diagram for the following scenario. A relational database is to be designed for a medium sized Company dealing with industrial applications of computers. The Company delivers various computer products to its customers. Some products serve generic purpose, therefore, they are sold to various customers The Company has number of employees in each department; each is specialized in one particular area (i.e. consultant, programmer, support, system analyst, developer) but each area contains many employees. For product delivery, projects are carried out in an inter-disciplinary way. The Company starts one new project for each requested product. When a project is undertaken, a team is formed by grouping employees from different departments that can share different groups An employee is also assigned as the project manager of the team who is entirely and exclusively responsible for the control of the project. An employee can manage more than one team. Teams and projects are only…The database interface of a library allows searching only for a single attribute (such as Title or Author ) in each query. Your friend decided to extend it’s functionality and wrote an algorithm that allows searching for books that satisfy multiple predicates over single attributes in conjunction. He tells you the algorithm reuses the already implemented query functionality and works by intersecting the results ( book id’s ) of queries over single attributes.Which of the following assumptions on your friend’s algorithm are plausible?a) Its worst-case run-time necessarily increases exponentially with respect to the number of attributes in the query.b) Its worst-case run-time depends on the length of the longest result of the single-attribute queries.c) It might be implemented using an join.d) It might be implemented using sorting.Define ACID properties in the context of database transactions and explain their significance.