AX data base

Dear All,

Can anyone tell me what is the exact difference between AX 2009 and AX 2012 R3 in Data base part?

Why we have 3 separate databases in R2 & R3 whether it was available in AX 2009.

Regards

Shreedhara

One database holds the data - its purpose is the same as in AX 2009. The model store database contains code and metadata, replacing files such as .aod. There also may be a baseline database used for upgrades, replacing the “Old” subfolder in the application folder.

You might want to read more about Model store architecture.