Update README.md

dgraph-101/README.md

@@ -21,3 +21,25 @@ Modus is code first, simply define you data using classes.
 In this example we are using `Product` and `Category` defined in `classes.ts` file.
 
 ## Define your API.
+
+index.ts is where we export the functions that are exposed as GraphQL operations.
+
+This project defines the following operations:
+
+- upsertProduct
+- getProduct
+- deleteProduct
+
+Note that Modus is exposing `getProduct` as `product` to follow common coding and GraphQL practices.
+Modus also exposes `upsertProduct` and `deleteProduct` as a GraphQL Mutation automatically.
+
+- getProductsByCategory
+The data is saved in Dgraph as a graph.
+This function shows how to easily use the relationships in the graph.
+
+- searchProducts
+Finally we are using an AI model to create text embeddings for our Products.
+
+As the embeddings are stored in Dgraph for each Product entity, we can easily expose an API to search by natural language and similarity
+
+