Identify the candidate keys, Database Management System

Consider the following six relation schemes and their corresponding sets of functional dependencies. In each case identify

a. All the candidate keys

b. The highest normal form of the relation (2NF, 3NF, BCNF).

R1 (W, X, Y, Z) XY→Z, YW

R2 (K,L,M,N) KL→N, KM

R3 (P,Q,R,S) P→Q, QR, RS

R4 (T,U,V) T→U, UT, TV

R5 (W,X,Y,Z) Z→W, YZW, WYXZ

R6 (A,B,C,D) AB→D, AC→D

 

Posted Date: 4/6/2013 3:06:41 AM | Location : United States







Related Discussions:- Identify the candidate keys, Assignment Help, Ask Question on Identify the candidate keys, Get Answer, Expert's Help, Identify the candidate keys Discussions

Write discussion on Identify the candidate keys
Your posts are moderated
Related Questions
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t

Write short notes on transaction state? A transaction may not always complete its implementation successfully such a transaction is termed aborted A transaction must be in o

What are the categories of SQL command? SQL commands are separated in to the following categories: 1. Data - Definitition Language 2. Data Manipulation language 3. Dat

What is aggregate function? Briefly describe it? Aggregate functions are functions that take a collection of values as input and return a one value. SQL offers 5 built-in aggre

describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr

Describe the Association: Design  Before we describe association design let us define association "Association is set of links between two objects in the object model". It is

This project requires you to perform a systems analysis and then design a system solution using database software. Ace Auto Dealers specializes in selling new vehicles from Subaru.

What are the Constituents of File? Also elaborates all the possible file operations? A file is organised logically as sequence of record. These records are mapped onto disk blo

Describe the shadow paging technique.

Consider the relations City (city_name, state) Hotel (name, address) City_hotel (hotel_name, city_name, owner) Answer the following queries in relational algebra (i) Find