ios - Core Data Table Relationship and Fetchrequest -

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I am developing an iPad application using storyboard and core data. I have no good idea about core data. I have 2 table names, A and B table have 2 fields with 2 data names and value. In Table B, there are two field names with name codes and text. The limit of AA is set.

Table A

Datacode value

p1 10

M1 17

p028 <

M3 20

w4 12

Table B

Item Code

P0 Car

P1 bus

M2 penn

M1 ball

P restriction

R1 book

M3 pencil

N1 TV

w4 radio

Item code in table B is the data code in Table A + some other value.i Based on table code, it is necessary to bring the text value from the table B. The item code, which corresponds to the datacode in the table, How at the door I get text b.

First you need to make a connection between tables A and B. After that you have to get the record based on your relationships ... you will get your records like this .... 

  NSMutableArray * arrObj = [[NSMutableArray alloc] init]; For (TableBob relationWithTblB in TableB * tblObj) {[arrObj addObject: tblObj]; } NSLog (@ "Record related to your table -% @", AROBJ);

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