Prcedure to joining of two tables and pls explore the primary & foriegn key

Dear All,
Am new to this forum looking forward to have some discussions and guidance reg ABAP.
My query is
what is the prcedure to joining of two tables and pls explore the primary & foriegn key relationships.
Your kind help is required in this query .
Thanks n regards
Carol P

Hi Carol,
Joining two tables fetch data from tables that has relevent entry based on the keys. like LIKP and LIPS these are delivery tables. if the business requirement is fetching delivery data that are exists in both two tables. here LIKP will conatins a single entry against a condition and LIPS may contains several entry because one delivery may has multiple line items. so, fetch the data joining the two tables on vbeln that is delivrey number. this is used to increase the performance of the program except for all entries.
Foreign key is poiting twowards primary key; it may be 1:1 , 1:many and many:many. if field1 of table a is pointing towards field1 of table b. then based on these condition at the time of entry SAP will check how many entry can be entred in field1 of table a.
regards
Krishnendu

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11GR2
=-----------------------------------
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Prcedure to joining of two tables and pls explore the primary & foriegn key

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