0
Tracks
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What are logical separations between data on a CD called?
Tracks
Difference between physical and logical DFD?
difference between physical and logical data flow diagrams.
The relationship between data is defined in the?
logical level
What is a logical database?
A logical database is the structure of data. It is the different pieces of information and the relationships between them.
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 is difference between physical data flow diagram and logical data flow diagram?
dsegsgsgsg
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.
Difference between logical database and physical database?
The logical database is how the data is percieved in the tables, the way the data is actually stored on the storage medium is the physical view of the database.
Which layer translates between physical and logical addresses?
Data Link Layer
What is the fundamental difference between logical and physical data structures?
1) Logical data structures are structures that emphasize on data relationships and how data is related from the view of the user. 2) Physical data structures are data models that emphasize on the use of efficiently and effectively storing data in memory.
When some arithmetic or logical operations are performed on data it is called?
I believe the term "data processing" is appropriate in this case.
Distinguish between logical data independence and physical data independence?
logical data : refer to the immunity of the external scheme towards changes in the conceptual scheme.physical data: refer to the immunity of the conceptual scheme towards changes in the internal scheme.
