Data independence is the type of data transparency that matters for a centralized DBMS. It refers to the immunity of user applications to make changes in the definition and organization of data.
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 there is no difference in the operation carried out against the data.
The data independence and operation independence together gives the feature of data abstraction. There are two levels of data independence.
Read more about Data Independence: First Level, Second Level, Data Independence Types
Famous quotes containing the words data and/or independence:
“This city is neither a jungle nor the moon.... In long shot: a cosmic smudge, a conglomerate of bleeding energies. Close up, it is a fairly legible printed circuit, a transistorized labyrinth of beastly tracks, a data bank for asthmatic voice-prints.”
—Susan Sontag (b. 1933)
“The Indian’s intercourse with Nature is at least such as admits of the greatest independence of each.”
—Henry David Thoreau (1817–1862)