A: Hi,

Internal GraphQL server: You can execute queries against the GraphQL server directly from within your application, using PHP code, without the need to expose an endpoint. More info:

- https://gatographql.com/extensions/internal-graphql-server
- https://gatographql.com/extensions-reference/internal-graphql-server

Persisted queries: You can compose and execute GraphQL queries directly from the wp-admin, using a visual client. No need to code/deploy any PHP or JS code. More info:

- https://gatographql.com/extensions/persisted-queries
- https://gatographql.com/extensions-reference/persisted-queries

Polylang integration: In a multilingual site, you can query data for a specific language (it integrates with the Polylang plugin, both free and PRO versions). More info:

- https://gatographql.com/extensions/polylang
- https://gatographql.com/extensions-reference/polylang

> So this helps me in querying my WordPress site database visually instead of writing mysql, is this what it is?
Yes

> Also it can be installed in WordPress dashboard like other plug-ins, right? And then I can work by clicking on plug-in in left hand menu?
Yes