A Guide to SQL
9th Edition
ISBN: 9781337668880
Author: Pratt
Publisher: Cengage
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Chapter 2, Problem 1CAT
Program Plan Intro
Normalization:
- Normalization refers to the method of representing a
database in the terms of relations, which are in the standard normal forms. - It is organized in a table manner to reduce data redundancy and data dependency.
First Normal Form (1NF):
A table or a relation is said to be in first normal form if and only if the domain of each attribute consists of only unique values and the value of each attribute consists of only a single value.
Second Normal Form (2NF):
A table or a relation is said to be in second normal form if and only if it is in first normal form and no non-key attribute of the table is dependent on only a portion of the primary key.
Third Normal Form (3NF):
A table or a relation is said to be in third normal form if and only if it is in second normal form and if the candidate keys are its only determinants.
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Consider the following scenario in which host 10.0.0.1 is communicating with an external SMTP mail server at IP
address 128.119.40.186.
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messages for transmission at different multiple access wireless nodes at times t=0.1, 1.4, 1.8, 3.2,
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For the CSMA protocol (without collision detection), indicate which packets are successfully
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channel busy, then that node will not attempt a retransmission of that packet until sometime after
t=5. Hint: consider propagation times carefully here. (Note: You can find more examples of problems similar to this here B.]
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Just wanted to know, if you had a scene graph, how do you get multiple components from a specific scene node within a scene graph? Like if I wanted to get a component from wheel from the scene graph, does that require traversing still?
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Chapter 2 Solutions
A Guide to SQL
Ch. 2 - Prob. 1RQCh. 2 - What is an attribute?Ch. 2 - What is a relationship? What is a one-to-many...Ch. 2 - Prob. 4RQCh. 2 - What is a relation?Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - How do you qualify the name of a field, and when...Ch. 2 - Prob. 9RQCh. 2 - What is a primary key? What is the primary key for...
Ch. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Define second normal form. What types of problems...Ch. 2 - Define third normal form. What types of problems...Ch. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - List the changes you would need to make to your...Ch. 2 - Prob. 1TDCh. 2 - Prob. 2TDCh. 2 - Prob. 3TDCh. 2 - Prob. 4TDCh. 2 - Prob. 5TDCh. 2 - Prob. 1CATCh. 2 - Identify the functional dependencies in the...Ch. 2 - Prob. 3CATCh. 2 - Determine the functional dependencies that exist...Ch. 2 - Prob. 2SCGCh. 2 - Prob. 3SCG
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