Please TYPE IF POSSIBLE OR WRITE CLEARLY 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
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Question 1: Normalization
Please TYPE IF POSSIBLE OR WRITE CLEARLY
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)).
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- PLEASE TYPE IF POSSIBLE OR WRTIE ELIGIBLY 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)).Question 1: Normalization PLEASE WRITE ELIGIBLE AND SHOW FULL STEPS FOR DIAGRAM TO DECOMPOSE 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 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)).You are given a relation R with the following attributes R(A,B,C,D,E). Assume that you were given the following functional dependencies: • FD1= AB -> E • FD2: = D -> C (a) What is a valid key for this relation? justify your response. (b) Is this relation in 3NF (Third Normal Form)? Justify your response. If it is not in 3NF, normalize the relation and demonstrate all steps of normalization.
- Question 2 2.1) Define Transitive Dependency. Give a good Example. 2.3) Consider a relation T with seven attributes ABCDEFG where AB is a composite primary key for T. Assume T has the following functional dependencies: AB -> CDEFG A -> CEF F -> E In what normal form is relation T? Explain why? Is it possible to decompose T into a number of relations in order to achieve a higher normal form? Explain how and show tables.note:please explain better Question 2 2.1) Define Transitive Dependency. Give a good Example. 2.3) Consider a relation T with seven attributes ABCDEFG where AB is a composite primary key for T. Assume T has the following functional dependencies: AB -> CDEFG A -> CEF F -> E In what normal form is relation T? Explain why? Is it possible to decompose T into a number of relations in order to achieve a higher normal form? Explain how and show tables.Consider the unnormalized relation R with six attributes ABCDEF and the following functional dependencies:AB ->CDEB -> FC -> Da) What is the key(s) for the relation?b) What is the normal form of this relation? Explain it.c) Decompose R into 3NF relations step by step if it is not in 3NF.
- Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following sets of functional dependencies. BCD→A BC→E A→F F→ G C→ D A→ G ? A) B B) C C) BC D) All combinations of attributes are keyConsider a relation T with seven attributes ABCDEFG where AB is a composite primary key for T. Assume T has the following functional dependencies: AB -> CDEFG A -> CEF F -> E In what normal form is relation T? Explain why? Is it possible to decompose T into a number of relations in order to achieve a higher normal form? Explain how and show tables.Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following sets of functional dependencies. A→B B→C C→D D→E E→ F F→ G G→ A ? A) ABC B) D C) EF D) All combinations of attributes are key
- Describe the meaning of a Functional Dependency between attributes in a single relation A1 → A2. Use an example such as the Employee relation’s SSN (Social Security Number) and the remaining attributes in the relation. Do not submit SSN as an answer. Provide an example of how functional dependencies are not symmetric i.e. if A1 → A2 it is not necessarily true that A2 → A1.Given a relation R (W,I,S,D,O,M) with thefollowing eight functional dependencies:F: {WI → S; D → OM; S → W; IO → S; IS → D; SM→ ID; WSD → I; SO → WM}.Perform the following(i) Remove Extraneous Attributes(ii) Remove redundant Functional dependencies(iii) Find the minimal Cover(iv) Find the closure for all key attributes(v) Find the Candidate Keys.Defined the relational algebra operations as follows: SELECT (p, R) is equivalent to σp(R) referring to a set tuples of relation R that conforms to predicate p. PROJECT(L, R) is equivalent to πL(R) referring to a relation that contains a vertical subset of R, extracting the values of specified attributes L and eliminating duplicates. JOIN (R, p, S) refers to a relation containing a combination of tuples of relations R and S that satisfy the join condition p. FULL_JOIN (R, p, S) refers to a relation containing the result of outer join between relations R and S that satisfy the join condition p LEFT_JOIN (R, p, S) refers to a relation containing the result of left outer join between relations R and S that satisfy the join condition p RIGHT_JOIN (R, p, S) refers to a relation containing the result of right outer join between relations R and S that satisfy the join condition p CROSS (R, S) refers to a relation containing the catesian product of relations R and S. UNION (R, S)…