Info620 week 5 assignment enterprise database systems assignments

Name: Chrystelle Song                       Date: 07/05/2015

Week 5 – Assignment #5: Chapters 15-16                                                    Grade: 5% of Class Grade

CH 15: BASICS of FUNCTIONAL DEPENDENCIES AND NORMALIZATION FOR RELATIONAL DATABASES

#15.19 - Suppose we feel the aftercited requirements (all five) for a university groundsbase that is used to guard way of novices’ transcripts:

(a)     The university guards way of each novice's call (SNAME), novice calculate (SNUM), political bond calculate (SSSN), exoteric oration (SCADDR) and phone (SCPHONE), persistent oration (SPADDR) and phone (SPPHONE), birthdate (BDATE), sex (SEX), class (CLASS) (freshman, sophomore, ..., graduate), senior province (MAJORDEPTCODE), junior province (MINORDEPTCODE) (if any), and rate program (PROG) (B.A., B.S., ..., Ph.D.). Both ssn and novice calculate feel sole computes for each novice.

(b)     Each province is forcible by a call (DEPTNAME), province order (DEPTCODE), business-post calculate (DEPTOFFICE), business-post phone (DEPTPHONE), and garden (DEPTCOLLEGE). Both call and order feel sole computes for each province.

(c)     Each race has a race call (CNAME), term (CDESC), order calculate (CNUM), calculate of semester hours (CREDIT), raze (LEVEL), and assistance province (CDEPT). The compute of order calculate is sole for each race.

(d)     Each minority has an tutor (INSTUCTORNAME), semester (SEMESTER), year (YEAR), race (SECCOURSE), and minority calculate (SECNUM). Minority calculates descry irrelative minoritys of the similar race that are taught during the similar semester/year; its computes are 1, 2, 3, ...; up to the calculate of minoritys taught during each semester.

(e)     A abstract annals refers to a novice (Ssn), refers to a feature minority, and abstract (GRADE).

Design a mental groundsbase schema for this groundsbase contact. First pomp all the professional dependencies that should arrest discurrent the attributes. Then, project kindred schemas for the groundsbase that are each in 3NF or BCNF. Specify the key attributes of each kindred. Note any unspecified requirements, and find embezzle assumptions to find the mention finished.

#15.20 - What update anomalies supervene in the EMP_PROJ and EMP_DEPT kindreds of Figure 15.3 and 15.4?

#15.21 - In what ordinary produce is the LOTS kindred schema in Figure 15.12(a) after a while reference to the restraining interpretations of ordinary produce that receive singly the primary key into statement? Would it be in the similar ordinary produce if the open definitions of ordinary produce were used?

#15.35 - Consider the kindred:

        BOOK (Book_Name, Author, Edition, Year) after a while the grounds:

Book_Name

Author

Edition

Year

DB_fundamentals

Navathe

4

2004

DB_fundamentals

Elmasri

4

2004

DB_fundamentals

Elmasri

5

2007

DB_fundamentals

Navathe

5

2007

 

a.        Based on a common-sense intelligence of the aloft grounds, what are the potential applicant keys of this kindred?

b.       Does the aloft feel one or more professional dependency (do not register FDs by applying origin rules)? If so, what is it? Pomp how you succeed abstract it by resolution.

c.        Does the resulting kindred feel an MVD? If so, what is it?

d.       What succeed the developed resolution face affect?

 

CH 16: RELATIONAL DATABASE DESIGN ALGORITHMS and FURTHER DEPENDENCIES

#16.20 - Pomp that the kindred schemas performed by Algorithm 16.6 are in 3NF.

#16.21 - Specify a template dependency for append dependencies.

#16.22 - Specify all the inclusion dependencies for the mental schema of Figure 3.5.

 

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