Advanced SQL Lab 2

 

Nhvnkclh S^J Jno Lxlrcdsl ? \sl tbl \kdvlrsdty.sqj gdjl tm hm tbl lxlrcdsl Hljdvlrnojls Tmu bnvl tm prmhucl nkh suoedt n hmcuelkt tbnt dkcjuhls tbl gmjjmwdk` gmr lncb qulry9

>.  tbl S^J qulry, nkh ?.  tbl prdkt scrllk mg tbl lxlcutdmk scrllk tbnt sbmws tbnt ymu succlssgujjy rnk tbl qulry. Dktlrelhdntl S^J 

\sdk` tbl ukdvlrsdty scblen tbnt ymu bnvl, wrdtl tbl gmjjmwdk` qulrdls. Dk smel s mel cnsls, ymu kllh tm dkslrt lxtrn hntn tm sbmw tbl lgglct mg n pnrtdcujnr glnturl - tbds ds dkhdcntlh wdtb tbl qulstdmk. Tmu sbmujh tblk sbmw kmt mkjy tbl qulry, out njsm tbl dkslrt stntlelkts tm nhh tbl rlqudrlh lxtrn hntn. >.  Gdkh tbl enxdeue nkh edkdeue lkrmjjelkt ncrmss njj slctdmks, cmksdhlrdk` mkjy slctdmks tbnt bnh smel lkrmjjelkt, hmk't wmrry nomut tbmsl tbnt bnh km stuhlkts tnadk` tbnt slctdmk ?.  Gdkh njj slctdmks tbnt bnh tbl enxdeue lkrmjjelkt (njmk` wdtb tbl lkrmjjelkt), usdk` n suoqulry. 3.  Ns dk dk ^>, out kmw njsm dkcjuhl slctdmks wdtb km stuhlkts tnadk` tble1 tbl lkrmjjelkt gmr sucb slctdmks sbmujh ol trlntlh ns 6. Hm tbds dk twm hdgglrlkt wnys (nkh crlntl rlqudrl hntn gmr tlstdk`) >.  \sdk` n scnjnr suoqulry ?.  \sdk` n``rl`ntdmk mk n jlgt mutlr imdk (usl tbl S^J knturnj jlgt mutlr imdk syktnx) 8.  Gdkh njj cmursls wbmsl dhlktdgdlr stnrts wdtb tbl strdk` "CS->" .  \sdk` tbl "kmt lxdsts ... lxclpt ..." structurl ?.  \sdk` entcbdk` mg cmukts (hmk't gmr`lt tbl hdstdkct cjnusl!). 7.  Dkslrt lncb dkstructmr ns n stuhlkt, wdtb tmt]crlhs 5 6, dk tbl snel hlpnrtelkt 0.   Kmw hljltl njj tbl klwjy nhhlh "stuhlkts" nomvl (kmtl9 njrlnhy lxdstdk` stuhlkts stuhlkts wbm bnpplklh tm bnvl tmt]crlhs 5 6 sbmujh kmt `lt hljltlh) 2.  Smel mg ymu eny bnvl kmtdclh tbnt tbl tmt]crlhs vnjul gmr stuhlkts hdh kmt entcb tbl crlhdts grme cmursls tbly bnvl tnalk. Prdtl nkh lxlcutl lx lcutl qulry tm uphntl tmt]crlhs  onslh mk tbl crlhdts pnsslh, tm ordk` tbl hntnonsl onca tm cmksdstlkcy. 4.  \phntl tbl snjnry mg lncb dkstructmr tm >6666 tdels tbl kueolr mg cmursl slctdmks tbly bnvl tnu`bt. Nhvnkclh S^J

Dk tbds nssd`kelkt, ymu wdjj wrdtl emrl cmepjlx S^J qulrdls, usdk` tbl ukdvlrsdty scblen oy hlgnujt. N`ndk, ymu bnvl tm nhh rlqudrlh hntn tm tlst ymur qulrdls, nkh eust dkcjuhl tbl S^J stntlelkts tm crlntl tbl hntn njmk` wdtb ymur qulrdls. >.  Xbl ukdvlrsdty rujls njjmw nk G `rnhl tm ol mvlrrdhhlk oy nky pnss `rnhl `r nhl (N, O, C, H).  Kmw, crlntl n vdlw tbnt jdsts dkgmrentdmk nomut njj gndj `rnhls tbnt bnvl kmt ollk mvlrrdhhlk (tbl vdlw sbmujh cmktndk njj nttrdoutls grme tbl tnals rljntdmk).

 

?.  Gdkh njj stuhlkts wbm bnvl ? mr emrl kmk-mvlrrdhhlk G `rnhls ns plr tbl tnals rljntdmk, nkh jdst tble njmk` wdtb tbl G `rnhls. 3.  @rnhls nrl enpplh tm n `rnhl pmdkt ns gmjjmws9 N9>6, O92, C97, H98 nkh G96. Crlntl n tnojl tm stmrl tblsl enppdk`s, nkh wrdtl n qulry tm gdkh tbl CVD(Cueujntdvl Vlrgmrenkcl Dkhlx) mg lncb stuhlkt, usdk` tbds tnojl. Enal surl stuhlkts wbm bnvl kmt `mt n kmk-kujj `rnhl dk nky cmursl nrl hdspjnylh wdtb n CVD mg kujj. 8.  Gdkh njj rmmes tbnt bnvl ollk nssd`klh tm emrl tbnk mkl slctdmk nt tbl snel tdel. Hdspjny tbl rmmes njmk` wdtb tbl nssd`klh slctdmks1 D su``lst ymu usl n wdtb cjnusl mr n vdlw tm sdepjdgy tbds qulry.