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NAS 9300-007 : LOTAR
The tracking, control and status control of product data, either as files, or through a database. The usage is frequently confined to the design stage of product development, although may extend to planning for manufacture.
Alternate Definitions:

Action Engineering - A database system that controls access to 3D engineering models and other product data, including approvals, release levels, and non-graphic attributes.

MBE Maturity Index - A capability that relates product lifecycle data to product definition.