0FIAP_C30 and 0FIAP_R30

Hi Experts,

I have cubes 0FIAP_C30 and 0FIAP_R30 implemented (by someone else), and I't trying to define the loading PC.

However, after reading some documentation on the subject, I have a few question so I can understand how this cubes work.

Q1: what is the difference between a replicated and a direct cube?

If i look at what i have

A)

Cube 0FIAP_R30 (direct cube)

...

DS: 0FI_AP_30 with no Infopackage

B)

Cube 0FIAP_C30 (Replicated cube)

...

DSO 0FIAP_O03

...

DS: 0FI_AP_3 with Infopackage

DS: 0FI_AP_4 with Infopackage

I see that cube 0FIAP_R30, has data, but no IP was loaded into this cube

Q2: can anyone provide clarity on how do this cubes and its loading work?

Many Thanks

Joana