The data segment is read-write, since the values of the variables can be altered at run-time. This is in contrast to the Rodata (constant, read-only data) section, as well as the code segment (also known as the text segment) which is read-only on many architectures.
The PC architecture supports a few basic read-write memory regions in a program namely: Stack, Data and Code. The heap is another region of address space available to a program, from which memory can be dynamically allocated or freed by the operating system in response to system calls such as malloc and free.
Read more about Data Segment: Program Memory
Famous quotes containing the word data:
“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)