What's a directive in Dgraph?

Question

For example, in this section of A Tour of Dgraph

# Define Directives and index

industry: string @index(term) .
boss_of: [uid] .
name: string @index(exact, term) .
works_for: [uid] .

Answer 1

Schema directives start with an at-sign (@) and can set special behavior for the predicate. In your example, there's the @index directive to set the index types like the exact or term index.

There are also other directives in the schema that you can learn about in the schema docs, such as @reverse to set reverse edges and @lang to use human-language aware strings.