## Relationship contains - contract_contains_instrument

### Card of relationship contains

Entity 1 | contract
Name | contains
Entity 2 | instrument
Code | contract_contains_instrument
Comment |
Dependent Role | instrument -> contract
Entity 1 -> Entity 2 Role Cardinality | 1,n
Entity 2 -> Entity 1 Role Cardinality | 1,1
Dominant Role | <None>
Assertion | Each contract must have one or more instrument. Each instrument must have one and only one contract.

### List of relationship joins of the relationship contains

Parent Attribute | Child Attribute
reporting agent identifier | reporting agent identifier
reporting reference date | reporting reference date
observed agent identifier | observed agent identifier
contract identifier | contract identifier

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