Inserting data with Apollo & Sequelize

Apollo and Sequelize have own methods to add data into database. and graphQl.Mutations. What logic behind inserting data into database with these. What way i should follow?

Insert data with Sequelize and query with Apollo? Another scenario, we are using Sequelize just for database modelling and creating tables then all crud operations doing with Apollo?

Trying to user react, meteor, apollo, postgres together and its working at basic level. Followed this article to built it

EDIT: I found some articles check, out, these, great, articles
Found articles at here