identifying entity type in database concepts

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A weak entity must participate in an identifying relationship type with an owner or identifying entity type

What meaning of identifying entity type ?
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hello
that means an entity type that uniquely identifies the weak entity.
For example,
consider a table of Orders and a table of OrderItems

The OrderItems is a weak type and is unique (identified) only for a specific order.

The OrderItems has then a foreign key to the table Orders

hope to be clear
Michel

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