# Elixir :map

**URL:** <https://forum.elixirforum.com/t/elixir-map/17195>\
**Category:** Resources Chat/Questions\
**Tags:** ecto, schema\
**Created:** [October 10, 2018, 8:39am UTC](https://forum.elixirforum.com/t/elixir-map/17195 "2018-10-10T08:39:35Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![NobbZ](https://forum.elixirforum.com/user_avatar/forum.elixirforum.com/nobbz/32/27235_2.png) [@NobbZ](https://forum.elixirforum.com/u/NobbZ)\
**Post date:** [October 10, 2018, 8:45am UTC](https://forum.elixirforum.com/t/elixir-map/17195/2 "2018-10-10T08:45:30Z")

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Can you please elaborate your question? Where does the `field/2` function come from? What is meant by `=>`?

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