The correct answer: Data independence
Data independence<span> is the type of </span>data<span> transparency that matters for a centralised DBMS. It refers to the immunity of user applications to changes made in the definition and organization of </span>data<span>. Physical </span>data independence<span> deals with hiding the details of the storage structure from user applications.
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The logical<span> structure of the data is known as the 'schema definition'. In general, if a user application operates on a subset of the </span>attributes<span> of a </span>relation<span>, it should not be affected later when new attributes are added to the same relation. Logical data independence indicates that the conceptual schema can be changed without affecting the existing schemas.
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<span>The physical structure of the data is referred to as "physical data description". Physical data independence deals with hiding the details of the storage structure from user applications. The application should not be involved with these issues since, conceptually, there is no difference in the operations carried out against the data.</span>
Answer:
Option A is the correct option for the following question.
Explanation:
Because Program documentation is the documentation in which contain the information about the software and also contain the logic of the modules of the program is user-friendly and convenient language about that application or the software and it is hard copy or any digital manual through which the programmer has to know about the application.
So, that's why the following option is correct.
The four main components are main memory, arithmetic and logic unit, control unit, and input/output (I/O). :)
Answer:
Your response is correct.
I hope this helped at all.
