What changes must a database provider do in the old entity framework provider (say EF5) to support the features of all the latest EF provider (EF6.x)? -

What changes must a database provider do in the old entity framework provider (say EF5) to support the features of all the latest EF provider (EF6.x)? -

what changes must database provider (example oracle, mysql etc) in old entity framework provider (say ef5) back upwards features of latest ef provider (ef6.x)?

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