Data Independence: “Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level. It is a type of data transparency, which focuses for a centralised DBMS ( Database Management System). One of the biggest advantages of databases is data independence. There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

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Answer 1

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Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

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Answer 2

Question

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

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Answer 3

Question

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

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Answer 5

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

Answer 6

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

Answer 7

Chapter 2, Problem 21RQ

Program Plan Intro

Data Independence:

“Data Independence” refers to the ability to modify a schema definition in one level without affecting a schema definition in different level.

It is a type of data transparency, which focuses for a centralised DBMS (Database Management System).

One of the biggest advantages of databases is data independence.

There are two levels of data independence, one is “Physical data independence” and the other one is “Logical data independence”.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 2 - Prob. 1RQ Ch. 2 - What is a business rule, and what is its purpose...Ch. 2 - How do you translate business rules into data...Ch. 2 - Prob. 4RQ Ch. 2 - Explain how the entity relationship (ER) model...Ch. 2 - Prob. 6RQ Ch. 2 - Prob. 7RQ Ch. 2 - Prob. 8RQ Ch. 2 - Prob. 9RQ Ch. 2 - Prob. 10RQ

Solution Summary: The author explains that data independence refers to the ability to modify a schema definition in one level without changing the external schema.

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Chapter 2 Solutions