The best replacement for dbml is entity framework.

The best alternatives to dbml are rated as following:
★★★★★  entity framework
★★★★  xsd
★★  edmx

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Speaking about dbml, one probably shouldn't forget about linq.

Other search terms related to dbml and their ratings are:
★★★★★ linq
You have in mind a companion for dbml and it is not yet here? Propose!



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dbml
entity framework
xsd