AF ▁V 2 . 0 ▁D IV - 2 ▁View point . ▁The ▁Phys ical ▁Exchange ▁Spec ification ▁( P ES ) ▁consists ▁of ▁the ▁L DM ▁with ▁general ▁data ▁types ▁specified ▁and ▁implementation ▁attributes ▁( e . g ., ▁source , ▁date ) ▁added , ▁and ▁then ▁generated ▁as ▁an ▁ ▁X SD . ▁Represent ed ▁in ▁the ▁Do D AF ▁V 2 . 0 ▁D IV - 3 ▁View point . ▁ ▁The ▁purposes ▁of ▁the ▁DM 2 ▁are : ▁Est ab lish ▁and ▁define ▁the ▁const rained ▁voc ab ul ary ▁for ▁description ▁and ▁disc ourse ▁about ▁Do D AF ▁models ▁( former ly ▁“ products ” ) ▁and ▁their ▁usage ▁in ▁the ▁ 6 ▁core ▁processes ▁Spec ify ▁the ▁semantics ▁and ▁format ▁for ▁feder ated ▁E A ▁data ▁exchange ▁between : architecture ▁development ▁and ▁analysis ▁tools ▁and ▁architecture ▁databases ▁across ▁the ▁Do D ▁Enter prise ▁Architecture ▁( E A ) ▁Community ▁of ▁Interest ▁( CO I ) ▁and ▁with ▁other ▁author itative ▁data ▁sources ▁Support ▁discovery ▁and ▁understand ability ▁of ▁E A ▁data : ▁Disc overy ▁of ▁E A ▁data ▁using ▁DM 2 ▁categories ▁of ▁information ▁Under stand ability ▁of ▁E A ▁data ▁using ▁DM 2 ’ s ▁precise ▁semantics ▁augment ed ▁with ▁lingu istic ▁trace ability ▁( ali ases ) ▁Prov ide ▁a ▁basis ▁for ▁semantic ▁precision ▁ ▁in ▁architect ural ▁descri ptions ▁to ▁support ▁heter ogeneous ▁architect ural ▁description ▁integration ▁and ▁analysis ▁in ▁support ▁of ▁core ▁process ▁decision ▁making . ▁ ▁The ▁DM 2 ▁defines ▁architect ural