This guide provides instructions for installing and activating D3. If you are upgrading D3 from a previous version, another D3 platform, an Advanced Pick system, an R83 system, or a Pick-compatible environment, upgrade installation instructions and migration tips are included.
Information that is relevant to system administration is located in the D3 AIX System Administration Guide, which is included with the software package.
D3 is a multi-user, multitasking database management system (DBMS). D3 is an open systems environment that provides users with the capability to enter, modify, reformat, and retrieve information stored in data files.
This section introduces the key concepts of the implementation of D3 AIX. For ease of readability, the terms AIX and UNIX are used interchangeably.
The basic component of the D3 implementation is the virtual machine. A virtual machine is a program running under UNIX that simulates a real machine. The virtual machine has its own resources (disk, memory, devices, and so on) obtained from UNIX. More than one virtual machine can coexist on the same UNIX system, each D3 process being a separate UNIX process.
The virtual machine is initialized after UNIX is running, and UNIX remains the operating system of the hardware. The D3 package is a virtual machine running on AIX, which provides access to the UNIX environment. This method allows these system configurations: