Item group

1.Which are the tables for uploading item master?

2.where I can see Item group in AX2012?

1)Tables:EcoResProduct,EcoResProductDimensionGroupProduct,EcoResProductTranslation
2)Inventory and Warehouse Management->Setup>Inventory->Item groups

Q1. InventTable
InventTableModule
Ref_EcoResStorageDimensionGroup_EcoResStorageDimensionGroup
InventItemGroupItem…

…these are not required???

Q2.Thanks for the answer!

1.I uploaded one item with table :

EcoResProduct
EcoResProductDimensionGroupProduct
EcoResProductTranslation

one of the table (I think EcoResProductDimensionGroupProduct) did not get uploaded still I can see the
Item in Product information manegement>common>products>products
Is it OK?

2.can we upload released products directly?

If yes then what are the tables?