Independence of data and program means (select true claims): Select one or more:
ID: 3710142 • Letter: I
Question
Independence of data and program means (select true claims):Select one or more: a. the purpose of the data-processing program may not be the same as the purpose for which the data was stored b. data are presented in a program format, which is independent of the way they are stored c. data may be stored on a physical device other than the program d. data can be shared with different programs for different purposes Independence of data and program means (select true claims):
Select one or more: a. the purpose of the data-processing program may not be the same as the purpose for which the data was stored b. data are presented in a program format, which is independent of the way they are stored c. data may be stored on a physical device other than the program d. data can be shared with different programs for different purposes Independence of data and program means (select true claims):
Select one or more: a. the purpose of the data-processing program may not be the same as the purpose for which the data was stored b. data are presented in a program format, which is independent of the way they are stored c. data may be stored on a physical device other than the program d. data can be shared with different programs for different purposes
Explanation / Answer
Answer)
The answer which are true are as follows:
A) As the logical data independence describes the conceptual schema which can be changed even without affecting the existing external schemas. Hence it is true.
C) Data's are definitely stored in database and any changes made are made at the external and conceptual level which are absorbed by mapping. It is a versatile approach as it is beyond just having the data stored in the database but also using it within a program's source code. Hence true.
D) As the database holds the data for use by various applications. The same data is being used in many different ways and data independency provides it hence true.
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