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Data independence is a form of database management that keeps data separated from all programs that make use of the data. As a cornerstone for the idea of a DBMS or database management system, data independence ensures that the data cannot be redefined or reorganized by any of the programs that make use of the data. In this manner, the dataremains accessible, but is also stable and cannot be corrupted by the applications using it.

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Why logical data independence is more difficult than physical data independence?

Logical data independence is considered more difficult than physical data independence because it involves changes to the conceptual schema and external schema, which are more closely tied to the way data is organized and viewed in the application. Physical data independence, on the other hand, deals with changes to the internal schema, which is more abstract and can be modified with less impact on the overall system.


Is it harder to achieve logical data independence or physical data independence?

It is generally considered more difficult to achieve logical data independence compared to physical data independence. Logical data independence involves separating the conceptual structure of the data from the physical storage aspects, which can be complex depending on the database design. Physical data independence primarily deals with shielding the application from changes in the storage structure, which is usually more straightforward to achieve.


What do you mean by data independence?

the ability to modify the structure or schema of one level without affecting the other level is call data independence it is of two type physical data independence logical data independence


2.5 What is the difference between logical data independence and physical data independence?

The logical data independence is the ability to modify a logical schema without making external view or application program change. The physical data independence is the ability to modify a physical schema without making external view or application prrogram change.


Why is data independence lacking in file systems?

Data independence is lacking in file systems because they often store data in a format that is tightly coupled with the applications that use it. This means that changing the structure or format of the data requires modifications to the applications, leading to a lack of flexibility and interoperability. In contrast, databases offer better data independence by separating the physical storage of data from the logical representation, allowing for easier modifications without impacting applications.

Related Questions

How it is related to data independence?

Hi, Data Independence refers to the immunity of user application to make changes in the definition and organization of Data. There are three types of Data Independence - 1. Logical Data Independence - The ability to change the logical (conceptual) schema without changing the External schema (User View) is called logical data independence. 2. Physical Data Independence - The ability to change the physical schema without changing the logical schema is called physical data independence. 3. View Data Independence - always independent,no effect.


How are the internal external and conceptual schemas related to concept of logical and physical data independence?

The internal schema represents the physical storage structure of data, the external schema represents how different users view the data, and the conceptual schema defines the logical structure of the entire database. Logical data independence means that the conceptual schema can change without affecting the external schemas, while physical data independence means that changes in the physical storage structures do not affect the conceptual or external schemas.


Why logical data independence is more difficult than physical data independence?

Logical data independence is considered more difficult than physical data independence because it involves changes to the conceptual schema and external schema, which are more closely tied to the way data is organized and viewed in the application. Physical data independence, on the other hand, deals with changes to the internal schema, which is more abstract and can be modified with less impact on the overall system.


Is it harder to achieve logical data independence or physical data independence?

It is generally considered more difficult to achieve logical data independence compared to physical data independence. Logical data independence involves separating the conceptual structure of the data from the physical storage aspects, which can be complex depending on the database design. Physical data independence primarily deals with shielding the application from changes in the storage structure, which is usually more straightforward to achieve.


Is the word independence a concrete or abstract?

The word 'independence' is an abstract noun, a word for a concept.


Which one between logical and physical data independent is harder to achieve and why?

the logical data independence is hard to achieve because all the manipulation is belonging in logical data independence but in physical data independence only show the physical view .


How does the concept of measurement independence impact the accuracy and reliability of data collection in research studies?

The concept of measurement independence refers to the idea that different measurements or variables in a study should not influence each other. When measurements are independent, it helps ensure that the data collected is accurate and reliable. This is because it allows researchers to assess each variable separately, without the risk of bias or distortion from other factors. By maintaining measurement independence, researchers can have more confidence in the validity of their findings and draw more accurate conclusions from their research studies.


What do you mean by data independence?

the ability to modify the structure or schema of one level without affecting the other level is call data independence it is of two type physical data independence logical data independence


Is independence an abstract or concrete noun?

The noun 'independence' is an abstract noun, a word for a concept.


Why data independence is important?

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In OOP the concept of insulating data and from direct access by the program is known as?

In OOP, the concept of insulating data and from direct access by the program is known as


What Logical data independence and physical data?

Logical data independence refers to the ability to modify the conceptual schema without changing the external schemas or application programs. In contrast, physical data independence allows changes to the internal schema – like indexes and storage structures – without affecting the conceptual or external schemas.