Normalization: The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables. First normal form (1NF): If a table does not contain any replicate fields or groups of fields then that model is called as first normal form. In this form, entities do not contain any single instance of the repeating variable. It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected. Second normal form (2NF): The value of all non-primary key attributes should be dependent on the primary key attribute. If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity. The partial dependencies should be removed from the data model. Third normal form (3NF): The value of any non-primary key attributes will not depend on any other non-primary key attributes. If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted. It is termed as transitive dependency. Partial dependency: A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1 st normal form. Transitive dependency: A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key. Functional dependency: An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency. In a table one attribute is functionally dependent on another attribute to take one value.

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Suppose you buy an electronic device that you operate continuously. The device costs you $300 and carries a one-year warranty. The warranty states that if the device fails during its first year of use, you get a new device for no cost, and this new device carries exactly the same warranty. However, if it fails after the first year of use, the warranty is of no value. You plan to use this device for the next six years. Therefore, any time the device fails outside its warranty period, you will pay $300 for another device of the same kind. (We assume the price does not increase during the six-year period.) The time until failure for a device is gamma distributed with parameters α = 2 and β = 0.5. (This implies a mean of one year.) Use @RISK to simulate the six-year period. Include as outputs (1) your total cost, (2) the number of failures during the warranty period, and (3) the number of devices you own during the six-year period. Your expected total cost to the nearest $100 is _________,…

Answer 1

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Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

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Suppose you buy an electronic device that you operate continuously. The device costs you $300 and carries a one-year warranty. The warranty states that if the device fails during its first year of use, you get a new device for no cost, and this new device carries exactly the same warranty. However, if it fails after the first year of use, the warranty is of no value. You plan to use this device for the next six years. Therefore, any time the device fails outside its warranty period, you will pay $300 for another device of the same kind. (We assume the price does not increase during the six-year period.) The time until failure for a device is gamma distributed with parameters α = 2 and β = 0.5. (This implies a mean of one year.) Use @RISK to simulate the six-year period. Include as outputs (1) your total cost, (2) the number of failures during the warranty period, and (3) the number of devices you own during the six-year period. Your expected total cost to the nearest $100 is _________,…

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Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

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Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

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Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

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Answer 6

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Answer 7

Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

Answer 8

Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Answer 9

Chapter 6, Problem 6RQ

Program Plan Intro

Normalization:

The process used to minimize data redundancy and dependency in a relational database is known as normalization. The database table is divided into two or more tables and defines the relationship between those tables.

First normal form (1NF):

If a table does not contain any replicate fields or groups of fields then that model is called as first normal form.

In this form, entities do not contain any single instance of the repeating variable.

It means that the entities contain only one instance of the attributes, multi-valued attributes are neglected.

Second normal form (2NF):

The value of all non-primary key attributes should be dependent on the primary key attribute.

If any attribute is depending on the partial primary key then it should determine the other attributes for an instance of the entity.

The partial dependencies should be removed from the data model.

Third normal form (3NF):

The value of any non-primary key attributes will not depend on any other non-primary key attributes.

If any non-primary key attributes depend on any other non-primary key attribute then it should be moved or deleted.

It is termed as transitive dependency.

Partial dependency:

A partial dependency exists at that time of an attributes depends only a part of primary key. This dependency is related with 1^st normal form.

Transitive dependency:

A transitive dependency exists at that time of an attributes depends on another attribute which is not part of primary key.

Functional dependency:

An association between two attributes or two set of attributes in a same relational database table, which is having some constraints is known as functional dependency.

In a table one attribute is functionally dependent on another attribute to take one value.

Answer 10

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Answer 11

Explanation of Solution

b.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Answer 12

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

Answer 13

Explanation of Solution

c.

Dependencies diagrams for each database table:

Table1:

Create the database table with name of Table1 is given below:

Table1 (C1, C2)

Here, C1 indicate the primary key.

C2 are partial dependent on C1.

Normal form:

The relation is in third normal form (3NF), since there is no transitive dependency and no repeated attributes.

The representation of dependency diagram for table1 is shown below:

Table2:

Create the database table with name of Table2 is given below:

Table2 (C1, C3, C4)

Here, C1 and C3 indicate the primary key and C1 indicates the foreign key that belongs to Table1 and C4 indicates the foreign key that belongs to Table3...

Answer 14

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Ch. 6 - Prob. 1RQ Ch. 6 - Prob. 2RQ Ch. 6 - Prob. 3RQ Ch. 6 - Prob. 4RQ Ch. 6 - Prob. 5RQ Ch. 6 - Prob. 6RQ Ch. 6 - Prob. 7RQ Ch. 6 - Prob. 8RQ Ch. 6 - Prob. 9RQ Ch. 6 - Prob. 10RQ

Solution Summary: The author explains normalization, which minimizes data redundancy and dependency in relational databases.

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