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.

Question

Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

Answer 1

Question

Chapter 2, Problem 1CAT

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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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Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

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