ADVANCED DATABASE Chapter 4 problems 11 & 12 5 ... - Csmaster
ADVANCED DATABASE Chapter 4 problems 11 & 12 5 ... - Csmaster
ADVANCED DATABASE Chapter 4 problems 11 & 12 5 ... - Csmaster
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Partial dependencies:<br />
1. (CHAR_TRIP‐> CHAR_DATE, CHAR_CITY, CHAR_MILES, CHAR_PAX, CHAR_CARGO)<br />
2. (CUST_NUM‐> CUST_LNAME)<br />
3. (AC_NUMBER‐> MODEL_CODE, MODEL_SEATS, MODEL_CHG_MILE)<br />
4. (CHAR_TRIP ‐> PILOT, COPILOT, FLT_ENGINEER, LOAD_MASTER)<br />
22. Decompose the dependency diagram you drew to solve Problem 21 to create table structures that<br />
are in 3NF and write the relational schema. Make sure that you label all dependencies.<br />
(CHAR_TRIP, CUST_NUM, AC_NUMBER, CHAR_DATE, CHAR_CITY, CHAR_MILES, CUST_LNAME,<br />
CHAR_PAX, CHAR_CARGO, PILOT, COPILOT, FLT_ENGINEER, LOAD_MASTER, AC_NUMBER,<br />
MODEL_CODE, MODEL_SEATS, MODEL_CHG_MILE)<br />
TRIP (CHAR_TRIP, CHAR_DATE, CHAR_CITY, CHAR_MILES, CHAR_PAX, CHAR_CARGO,<br />
CREW ( CHAR_TRIP, AC_NUMBER, CREW_PILOT, CREW_COPILOT, CREW_ FLT_ENGINEER,<br />
CREW_LOAD_MASTER)<br />
AIRPLANE (AC_NUMBER, MODEL_CODE, MODEL_SEATS, MODEL_CHG_MILE)<br />
23. Draw the Crow’s Foot ERD to reflect the properly decomposed dependency diagrams you created in<br />
Problem 22. Make sure that the ERD yields a database that can track all of the data shown in Problem<br />
21. Show all entities, relationships, connectivities, optionalities, and cardinalities.
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