Constraints used in Oracle (Bangla)

IivK‡j e¨veüZ K݇UªB›U (Constraints) mg~n t

IivK‡j wewfbœ ai‡bi K݇UªB›U e¨veüZ nq ‡hgb BDwbK K݇UªB›U, †PK K݇UªB›U, cÖvBgvwi Kx K݇UªB›U, d‡iBb Kx K݇UªB›U BZ¨vw`|

K݇UªB›U †Kb e¨eüZ nq ?

K݇UªB›U e¨venvi Kiv nq ‡Uwe‡j WvUv Gw›Uª Kivi mgq WvUv †fwj‡Wmb (validation) Kivi Rb¨| Avgiv hLb ‡Uwe‡ji †Kvb wd‡ì WvUv Gw›Uª Kwi ZLb IivKj †fwj‡Wmb †PK K‡i,d‡j †Kvb wd‡ì hw` fyj WvUv Gw›Uª Kiv nq Zvn‡j IivKj ‡Uwe‡j ‡mB WvUv Gw›Uª Ki‡Z ‡`q bv| GQvovI K݇UªB›U GKvwaK †Uwe‡j c¨v‡i›U-PvBì wi‡jmb †gBb‡UBb K‡i, Wywc­‡KU WvUv Gw›U Ki‡Z ‡`q bv, bvj (null) †fjy¨ Gv›Uª n‡Z  ‡`q bv BZ¨vw`| wewfbœ ai‡bi K݇UªB›U wewfbœ D‡Ï‡k¨ e¨eüZ nq, ‡hgb t

BDwbK K݇UªB›U t  BDwbK K݇UªB›U †PK K‡i ‡h IB Kjv‡gi ev wd‡ìi me WvUv ev †fj&y¨ GKwU n‡Z Ab¨wU wfb¨|

‡PK K݇UªB›U t †PK K݇UªB›U †PK K‡i ‡h †PK KwÛkb Abyhvwq WvUv Gw›Uª n‡”Q wK bv| †hgb : Avcwb Pv‡”Qb †h , hv‡`i eqm 18 eQi Gi †ewk ïay gvÎ Zv‡`i Bbdi‡gkb Gw›Uª n‡e, G‡¶‡Î Avcwb †PK K݇UªB›U e¨envi K‡i Zv wbw`ó Ki‡Z cv‡ib|

cÖvBgvwi Kx K݇UªB›U t cªvBgvwi Kx K݇UªB›U e¨veüZ nq †Uwe‡ji cªwZwU †iv †K Avjv`v fv‡e (BDwbKwj) AvB‡Ww›UdvB Kivi Rb¨|

d‡iBb Kx K݇UªB›U t d‡iBb Kx K݇UªB›U e¨eüZ nq `yB ev Z‡Zvw©aK ‡Uwe‡ji g‡a¨ c¨v‡i›U-PvBì wi‡jmb †gBb‡UBb Kivi Rb¨|

bU bvj K݇UªB›U t bU bvj K݇UªB›U wd‡ì bvj †fjy¨ Gw›Uª Ki‡Z  ‡`q bv|