Relationship between tables

HI all;

I need to get the following fields into my ODS.

1. cost center

2. activity type

3. version

5. Fiscal year

6. Posting Period

7. Activity Qty1

8. Activity Qty2

.

.

9 Activity Qty12.

I see these fields are stored in the following table

1. CSKS

2. COSL

3. CSLA

when I created a view there is no relationship exits between these tables. Please guide me through how to create the relationship if I have to include another table which is the appropriate one for my scenario.

thank you.