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Guru's Guide to SQL Server Architecture and Internals, The by Ken Henderson

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Processes

Key Process Terms and Concepts

Process— the encapsulation of a running program in Windows. A process provides a context in which threads can carry out the work of an application.

Process address space— the virtual memory address space for an application. This is limited to 4GB for 32-bit Windows applications. Addresses in Win32 applications are limited to 4GB because 4GB is the largest integer value a 32-bit pointer can store. Of these 4GB, by default 2GB are reserved for the kernel and 2GB are set aside for user mode access. On some editions of the Windows NT family, the user mode address space can be increased to 3GB (at the expense of kernel mode space) via the /3GB BOOT.INI switch for applications that have been linked with ...

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