Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 2, Problem 2.39E
Program Plan Intro
Candidate Key:
Candidate Key is the set of minimal attribute which can identify the whole set of attributes present in the tuple. It is a set of primary keys and is unique.
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NORMALIZATION EXERCISE
Based on the given relation schema below, perform normalization up to 3NF. Write your answer in below space
ORDER (Order_ID,Date,Cust_ID,Cust_Name,State,City,ItemNO,ItemDescription,ItemPrice,Quantity)
1NF
2NF
3NF
Normalize the following given data to 1/2/3 NF. State the relations schema after everynormalization.
Decompose the above relation using the Boyce-code normal form decomposition. What is the key relation for the relation R
Chapter 2 Solutions
Database Concepts (7th Edition)
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Prob. 2.13RQCh. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Prob. 2.40E
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- convert it to relations that are normalizationarrow_forwardDevelop recurrence relations for the last 3 columns of table 1. Use the recurrence relation you developed to complete the table for these months: • Month 59 • Month 60 • Month 61 • Month119 • Month 120 • Month 121 Show your calculations and completed table.arrow_forwardGiven the relations a(name, address, title) and b(name, address, salary), show how to express a natural full outer join b using the full outer-join operation with an on condition rather than using the natural join syntax. This can be done using the coalesce operation. Make sure that the result relation does not contain two copies of the attributes name and address and that the solution is correct even if some tuples in a and b have null values for attributes name or address.arrow_forward
- Convert the table above to a relation in first normal form. Illustrate the relation with the sample data in the table.arrow_forwardDevelop a set of relations in third normal form. Include a new column with the heading Violation in the appropriate table to explain the reason for each ticket. Values in this column are: expired parking meter (ticket code 1), no parking permit (ticket code 2), and handicap violation (ticket code 3).arrow_forwardExplain the concept of functional dependencies in the context of normalization.arrow_forward
- If you assume that a relation has no duplicate data, how do you know there is always at least one primary key?arrow_forwardUsing Normalization technique decompose the above un normalized relation to reach the 3NF, clearly showing all the steps involved to reach each Normal Form (NF). CustNo, CustName, Addr, SuppNo, SuppName, SuppTel, (ordNo, orderDesc, QtyOrdrd)arrow_forwardWrite at least 3 functional dependency from the tablearrow_forward
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