在采用段式内存管理的架构中，数据段（data segment）通常是指用来存放进程中已初始化且不为0的全局变量的一块内存区域。数据段属于静态内存分配。

• BSS段
• 代码段
• 内存管理
• 动态内存分配
• 段式管理

In computing, a data segment (often denoted .data) is a portion of an object file or the corresponding virtual address space of a program that contains initialized static variables, that is, global variables and static local variables. The size of this segment is determined by the size of the values in the program's source code, and does not change at run time.