ZuoTi.Pro
Question

4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in 3NF, is it in BCNF? You must
engineering   Computer-Science   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

atm,ate . Super keソ , Prime y or ke). SK: supes Rey (Aubrishen) SK no sK SK SK andidade key: SAg3 no not SK. Pme sk must noNote: cis nod preson in Fos so cmur be mcluided in cndi de key fo .hin pime attibur mut be in N. supe, ke-y sK Sksk So, 2,3,4,s are not in RoNF. sY sk Sk SK is not pus i be teecomprinte vinj Deçendency4 rod Sk Sk SK Lotglew join nonoSSk nod SK Sk Dependonoy CNF gcNF

0 0
Add a comment
Know the answer?
Add Answer to:
4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in ...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in ...

    4. (40 points) Identify the following relations that are in Third normal form (3NF)? If it is in 3NF, is it in BCNF? You must explain your answer to receive points. Also, for each question, pick one FD not in BCNF and decompose R into tables if it is not in BCNF. (2) R(ABCD) FD's: AB-»C; ABD->C; ABC-> D; AC-ID (4) R(ABCD) FD's: C- B;A->B; CD -»A; BCD (5) R(ABCD) FD's: AD C;D-A;A-C;ABC A D, 4. (40 points) Identify the...

  • Are the following relations in BCNF? 3NF? (if R is not in BCNF, decompose it to...

    Are the following relations in BCNF? 3NF? (if R is not in BCNF, decompose it to BCNF; if R is not in 3NF, decompose it to 3NF) R(X,Y, Z,T,V): XY->Z, Y->T, Z->V R(X,Y,Z,T): X->Y, Y->Z, Z->T R(A,B,C): AB->C, B->A, C->B R(ABCD): BD->C, AB->D, AC->B, BD->A R(ABCD): AD->C, CD->B, BD->C R(ABCD): A->C, B->A, A->D, AD->C R(ABCD): A->D, C->A, D->B, AC->B R(XYZT): XYT->Z, ZT->X, XZ->Y, XZ->T R(XYZT): XY->Z, XYT->Z, XYZ->T, XZ->T R(XYZT): YT->Z, XY->T, XZ->Y, YT->X R(XYZT): YZ->X, XT->Z, ZT->Y, YT->Z

  • i) Indicate all the 3NF violations. ii) Decompose the relations, as necessary, into collections of relations...

    i) Indicate all the 3NF violations. ii) Decompose the relations, as necessary, into collections of relations that are in 3NF. a) R(A,B,C,D) with FD's AB --> C, C --> D, and D --> A. f) R(A,B,C,D,E) with FD's AB --> C, C --> D, D --> B, and D --> E.

  • For the following relation schema and set of FD's R(A,B,C,D) with FD's AB->C, B->D, CD->...

    For the following relation schema and set of FD's R(A,B,C,D) with FD's AB->C, B->D, CD->A, AD->B Indicate the BCNF violations, and decompose the relations into relations that are in BCNF.

  • Identify, in the list below, a row in the result. Dragons B) Giants C) Lions D)...

    Identify, in the list below, a row in the result. Dragons B) Giants C) Lions D) Ham Fighters 26. If all function dependencies in a table are "very good" or "bad", the table is in A) 1NF B) 2NF C) 3NF D) BCNF 27·Determine the normal form for the relation R(ABCD) and FD's: AD ? C; D A) 1NF B) 2NF C) BCNF D) 3NF -28. Which of the following is not a candidate key for R(ABCD) FD's: BD ?...

  • Given the following relation schemas and the sets of FD's: a- R(A,B,C,D) F={ABẠC,C7D, D´A, BC+C} b-...

    Given the following relation schemas and the sets of FD's: a- R(A,B,C,D) F={ABẠC,C7D, D´A, BC+C} b- R(A,B,C,D) F={BẠC, BD, AD>B} C- R(A,B,C,D) F={AB-C, DC+D, CD+A, AD+B} d- R(A,B,C,D) F={AB=C, C+D, D™B, DE} e- R(A, B, C, D, E) F= {AB+C, DB+E, AE>B, CD+A, ECD} In each case, (i) Give all candidate keys (ii) Indicate the BCNF violation Give the minimal cover and decompose R into a collection of relations that are BCNF. Is it lossless? Does it preserve the dependencies?...

  • For the following relations and set of FDs: 1. give a key for the relation; 2....

    For the following relations and set of FDs: 1. give a key for the relation; 2. state whether the relation is in BCNF, and if it is not state why: 3. give a set of relations in 3NF equivalent to the original relation 1. (33 points) What is the closure of (A,B) with respect to R(A,B,C,D,E,F,G)if R has the following functional dependencies? (a) GCDE AF BF - ABC FC G (b) D-AC-D A+B ABC 2 33 points for each of...

  • my choices for these are wrong. 10 points QUESTION 3 Given R=(A, B, C) is a...

    my choices for these are wrong. 10 points QUESTION 3 Given R=(A, B, C) is a schema and F = {2C-A AB) is a set of FDs that hold on R. Which of the following statements is not true? d=(AB. AC) is a decomposition of that is in BCNF. O Ris in 3NF O BC is a candidate key for R Ris in BCN 10 points QUESTION 4 Given R= (A. 3. CD. E) is a schema and F= (A...

  • Simplify the following expressions using Boolean algebra. ABC + ABC + B ABCD + CD +...

    Simplify the following expressions using Boolean algebra. ABC + ABC + B ABCD + CD + A ABCD + ABC + ABD + ABCD ABCD + ABCD + ACD + C + A ABCD + ABEF + CD + D + F ABCD + ABCD + ABCD ABC + ABC + ABCDEF + EF ABCD + ABCD + ABCD + ABCD Simplify the following expressions using KMAP ABCCD + ABCD + ABCD ABCD + ABCD + ABCD + ABCD AB...

  • Using Minitab, 6.17. An experimenter has run a single replicate of a 2 design. The following...

    Using Minitab, 6.17. An experimenter has run a single replicate of a 2 design. The following effect estimates have been calculated: 76.95 AB = -51.32 ABC = -2.82 -67.52 AC = 11.69 ABD = -6.50 C = -7.84 AD = 9.78 ACD = 10.20 D = 18.73 BC = 20.78 BCD= -7.98 BD = 14.74 ABCD = -6.25 B = CD (a) Construct a normal probability plot of these effects. (b) Identify a tentative model, based on the plot of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT