i think that this is Usually a problem that i find always in the Information Extraction i hope to not be So wrong in that i m telling you.
-- [email protected] Inviato con Sparrow (http://www.sparrowmailapp.com/?sig) Il giorno mercoledì 1 febbraio 2012, alle ore 08.51, [email protected] ha scritto: > Suppose i have a relationship 1 to N, for example > Student , College. > Student Attributes: > Name,Surname,CollegeFKey, > College attributes: > CollegeKey,Other,Other. > > Suppose that i have a program which read students and Exams from a plain > text file. > And on this file i have duplicated Colleges and Duplicated Studens. > Like in denormalized tabels: > CollegeId,Other,Other,Name,Surname,CollegeFkey. > 1,x,y,Mike,M,1 > 1,x,y,R,P,1 > ... > ... > > you see i have to check in this case always that in my normalized db, i have > still not inserted in the Table College > 2 times the key 1, how can i solve this in Hbase ? i mean if i have 1000.. > tables and rows i dont want check > for every Primary Key and then for every Fk if it was inserted ok ? > how can i solve that ? > > > > -- > [email protected] (mailto:[email protected]) > Inviato con Sparrow (http://www.sparrowmailapp.com/?sig) >
