什么是4GD， What is 4GD? NX9.0有何新的优势？

mildcat

What is 4GD?

NX 8.5 introduced the fourth generation of design (4GD) and NX 9 enhances the existing 4GD functionality.
/ @1 i' H, {4 A4GD represents a major change in how NX product assemblies are stored and managed in Teamcenter, and how they
are checked out and used in NX.
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In 4GD, design elements replace traditional assembly components. Unlike assembly components, each design
  L% [7 h: V1 t* i# V: a% {element is an independently managed occurrence with its own position, access privileges, attributes, revision
4 i! v1 n! H7 e# I& lhistory, unit effectivity, and locking status.
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This means that when you check out any design element, it is displayed in its correct product location, without the
need to check out a parent assembly.