1) Consider the relation R, with key and functional dependencies shown below. What Normal form is...
1) Consider the relation R, with key and functional dependencies shown below.
-
What Normal form is R in right now? Why is this the case?
-
What actions would you take to normalize R to the next higher normal form? (Describe the steps)
-
Follow the steps you described in the prior question to normalize R to the next higher form. Be sure to
show all of the steps.
-
Once you have normalized R, what normal forms are each the two new relations in? Why?
-
If any of the remaining relations are not in 3NF, normalize them to 3NF. Be sure to show all of your work
R ( t, u, v, w, x, y, z )
Key: FD1: FD2: FD3:
t, u
t, u → v, w, x, y, z u → v, w
x, y → z
Homework Answers
If you have any doubt, comment down and get it cleared...
Also please upvote thanks..
Add Answer to:
1) Consider the relation R, with key and functional dependencies
shown below.
What Normal form is...
Consider the following relation R, where {A, B} is its PK. Assume that R is in...
Consider the following relation R, where {A, B} is its PK. Assume that R is in the first normal form (INF). R (A, B, C, D, E, F) Functional dependencies: FD1: BàC FD2: AàDE FD3: ABàF Why is this table not in 2NF? Specify which FDs make R violate 2NF. Normalize the data shown in this table to second normal form (2NF). Specify the primary and foreign key (if any) in each table of your 3NF relations. Normalize the data...
Consider the following schema and functional dependencies: SHIPPING (ShipName, ShipType, VoyageID, Cargo, Port, ArrivalDate) Key: ShipName,...
Consider the following schema and functional dependencies: SHIPPING (ShipName, ShipType, VoyageID, Cargo, Port, ArrivalDate) Key: ShipName, ArrivalDate FD1: ShipName > ShipType FD2: VoyageID > ShipName, Cargo FD3: ShipName, ArrivalDate > VoyageId, Port 1.Please list the final set of 3NF schema including all its keys. 2.Do any of the finalized 3NF schema have determinates that are not candidate keys? If yes, explain - which schema(s)? Why?
2. Consider an 1NF- relation StudentDB2 (sID, sFName, sLName, cID, cName, cCr, sectID, iID, iTitle, iLName,...
2. Consider an 1NF- relation StudentDB2 (sID, sFName, sLName, cID, cName, cCr, sectID, iID, iTitle, iLName, grade) that satisfies the following five functional dependencies: FD1 {sID}->{sFName, sLName} FD2 {cID}->{cName, cCr} FD3 {cID, sectID}->{iID} FD4 {iID}->{iTitle, iLName} FD5 {sID, cID, sectID}->{grade} a. What is/are candidate key(s) for relation StudentDB2? b. Normalize the relation StudentDB2 into a collection of 2NF-relations. c. Normalize the relation StudentDB2 into a collection of 3NF-relations. d. Normalize the relation StudentDB2 into a...
2. Given R(x,y, z, w, k, t). There are two keys: (x,y) and z. Given the...
2. Given R(x,y, z, w, k, t). There are two keys: (x,y) and z. Given the following functional dependency: F = { {x,y} {z,w,k,t}, z {x,y,w,k,t }, yt}. Is R in 2nd normal form? Justify your answer. 3. Given R(x,y, z, w, k, t). There are two keys: (x,y) and z. Given the following functional dependency: F = { fd1:{x,y} {z,w,k,t}, fd2: z {x,y,w,k,t }, fd3:k x}. Is R in 3rd normal form? Justify your answer....
Language: SQL - Normalization and Functional Dependencies Part 4 Normalization and Functional Dependencies Consider the following relation R(A, B, C, D)and functional dependencies F that hold o...
Language: SQL - Normalization and Functional
Dependencies
Part 4 Normalization and Functional Dependencies Consider the following relation R(A, B, C, D)and functional dependencies F that hold over this relation. F=D → C, A B,A-C Question 4.1 (3 Points) Determine all candidate keys of R Question 4.2 (4 Points) Compute the attribute cover of X-(C, B) according to F Question 43 (5 Points) Compute the canonical cover of F.Show each step of the generation according to the algorithm shown in class....
Consider the relational schemas given below and the respective sets of functional dependencies va...
Write the complete proof.
Consider the relational schemas given below and the respective sets of functional dependencies valid in the schemas For each one of the relational schemas, determine the highest normal form, which is valid for a schema. Justify your answer If a schema is not in BCNF, then decompose it into a minimum number of schemas so that each one of them is in BCNF. Justify your answers. Justification must include the derivations of minimal keys from the...
LANGUAGE IS SQL Give a BCNF decomposition to relation "s" according to the given functional dependencies....
LANGUAGE IS SQL
Give a BCNF decomposition to relation "s" according to the given functional dependencies. Show the steps of normalization clearly to get full credit. r(U, V, W, X, Y, Z) Z -> XY X-> VW V ->U XY-> Y
Databases Consider the following functional dependencies that hold on R(ABCDEF): AB-> CD, E -> C, B...
Databases Consider the following functional dependencies that hold on R(ABCDEF): AB-> CD, E -> C, B -> EF a) Is R in 3NF? b) Explain your answer in detail and decompose the relation, as necessary, into a collection of relations that are in 3NF. c) Make sure you first find all the key(s) of R so that you will be able to tell whether an attribute is prime. *Please answer all parts of this question in detail for credit.
1. Map the below ERD into a set of relations in at least Third Normal Form (3NF). You must ensure that your relations meet 3NF. Show your working. 2. List all the functional dependencies present in th...
1. Map the below ERD into a set of relations in at least Third
Normal Form (3NF). You must ensure that your relations meet 3NF.
Show your working.
2. List all the functional dependencies present in the
relation
i d leac ne Cowse Amociate Student Collec ri Maru ch ug
i d leac ne Cowse Amociate Student Collec ri Maru ch ug
Dependency Very Good dependency (key dependency) : XA where Table Very good If all dependencies i...
Dependency Very Good dependency (key dependency) : XA where Table Very good If all dependencies in a table are '"very good", the table is in BCNF X is a candidate key Good Good dependency: X-> A where If all dependencies in a table are "very good" or "good", the table is in 3NF X is not a candidate key X is a part of a candidate key A is prime attribute Bad Bad dependency (Transitive Dependency): X A where If...
Language: SQL - Normalization and Functional
Dependencies
Part 4 Normalization and Functional Dependencies Consider the following relation R(A, B, C, D)and functional dependencies F that hold over this relation. F=D → C, A B,A-C Question 4.1 (3 Points) Determine all candidate keys of R Question 4.2 (4 Points) Compute the attribute cover of X-(C, B) according to F Question 43 (5 Points) Compute the canonical cover of F.Show each step of the generation according to the algorithm shown in class....
Write the complete proof.
Consider the relational schemas given below and the respective sets of functional dependencies valid in the schemas For each one of the relational schemas, determine the highest normal form, which is valid for a schema. Justify your answer If a schema is not in BCNF, then decompose it into a minimum number of schemas so that each one of them is in BCNF. Justify your answers. Justification must include the derivations of minimal keys from the...
LANGUAGE IS SQL
Give a BCNF decomposition to relation "s" according to the given functional dependencies. Show the steps of normalization clearly to get full credit. r(U, V, W, X, Y, Z) Z -> XY X-> VW V ->U XY-> Y
1. Map the below ERD into a set of relations in at least Third
Normal Form (3NF). You must ensure that your relations meet 3NF.
Show your working.
2. List all the functional dependencies present in the
relation
i d leac ne Cowse Amociate Student Collec ri Maru ch ug
i d leac ne Cowse Amociate Student Collec ri Maru ch ug
Dependency Very Good dependency (key dependency) : XA where Table Very good If all dependencies in a table are '"very good", the table is in BCNF X is a candidate key Good Good dependency: X-> A where If all dependencies in a table are "very good" or "good", the table is in 3NF X is not a candidate key X is a part of a candidate key A is prime attribute Bad Bad dependency (Transitive Dependency): X A where If...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago