July 2019
Beginner to intermediate
300 pages
7h 48m
English
Content preview from Enterprise API Management
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Types that define operations
Operations are types that enable a GraphQL service to expose any given functionality that is to be offered by a GraphQL service.
Think of them as public functions within a class.
There are three operation types supported in GraphQL:
Query
This type is used to define operations that fetch data and thus are read only.
Mutation
This type is used to define operations that create and/or manipulate data, such as create, update, and delete. A mutation may also respond with a data fetch.
Subscription
GraphQL's implementation of web events (for example, Webhooks) allows clients that subscribe to a given event to then asynchronously receive updates.
For more information, refer to the section on operations on GitHub:
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