000			00456nam a22001817a 4500
999			_c60267 _d60267
005			20200625110635.0
008			200625b ||||| |||| 00| 0 eng d
082			_a621.3819535 U-2P
100			_aUllman, Jeffrey D
245			_aPrinciples Of Database Systems
250			_a2 ed.
260			_aNew Delhi _bGalgotia _c1992
300			_a484
650			_bData Models
650			_bProgram Environment
650			_bCyclic and Acyclic
942			_cDBK