What is delayed Insert and How it works?

Hi Experts,

what is delayed insert property in Pages  and how it works?

i have some Questions  on that can any clarify this one...

1. it is workable to any datatype?

2. but some where i didn't find for decimal datatype fields?

3. i need also AutoSplitKey?

4. Difference b/w this above two?

please give Information i already did R&D on 

==>http://forum.mibuso.com/discussion/17380/autosplitkey-and-delayed-insert

==> https://msdn.microsoft.com/en-us/library/dd301257(v=nav.80).aspx

Can any Explain this above second link 

Regards,

Ramesh.