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Program data independence refers to the ability to change the data structures and organization within a database without affecting the application programs that use the data. This allows developers to modify data structures without having to rewrite or change the application code, promoting flexibility and ease of maintenance in database systems.
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Difference between data dependence and data independence?
data dependance mean the data is dependance upon application programme. when we change in data so also change in application program which we use Data independance mean data is indpendant on applicaton programme or vice versa . if we change in data so there is no change in application programme
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 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.
Concept of data independence?
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.
Difference between data dependence and data independence?
data dependance mean the data is dependance upon application programme. when we change in data so also change in application program which we use Data independance mean data is indpendant on applicaton programme or vice versa . if we change in data so there is no change in application programme
What is structural independence?
exist when it is possible to make changes in the file structure without affecting the application program's ability to access the data.
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.
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 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.
Concept of data independence?
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.
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 .
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
Why data independence is important?
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RAM holds data and program for processing data?
RAM is volatile storage that holds the program and data that the CPU would be processing.
What is the scope of a data statement?
The scope of a data statement refers to where in the program the data is accessible. It defines the visibility and accessibility of the data within a program, determining which parts of the program can access and manipulate the data. Properly scoping data helps in managing data effectively and preventing unintended side effects.
