diff --git a/server/schema/schema.js b/server/schema/schema.js
index 1c0e87d..15fa367 100644
--- a/server/schema/schema.js
+++ b/server/schema/schema.js
@@ -20,7 +20,7 @@ const BookType = new GraphQLObjectType({
     author: {
       type: AuthorType,
       resolve (parent, args) {
-        // return _.find(authors, { id: parent.authorId });
+        return Author.findById(parent.authorId);
       }
     }
   })
@@ -35,7 +35,7 @@ const AuthorType = new GraphQLObjectType({
     books: {
       type: new GraphQLList(BookType),
       resolve (parent, args) {
-        // return _.filter(books, { authorId: parent.id });
+        return Book.find({ authorId: parent.id });
       }
     }
   })
@@ -48,26 +48,26 @@ const RootQuery = new GraphQLObjectType({
       type: BookType,
       args: { id: { type: GraphQLID } },
       resolve (parent, args) {
-        // return _.find(books, { id: args.id });
+        return Book.findById(args.id);
       }
     },
     author: {
       type: AuthorType,
       args: { id: { type: GraphQLID } },
       resolve (parent, args) {
-        // return _.find(authors, { id: args.id });
+        return Author.findById(args.id);
       }
     },
     books: {
       type: new GraphQLList(BookType),
       resolve (parent, args) {
-        // return books;
+        return Book.find({});
       }
     },
     authors: {
       type: new GraphQLList(AuthorType),
       resolve (parent, args) {
-        // return authors;
+        return Author.find({});
       }
     }
   }