Implement components to store migrated data

A facet is needed to store the customer loyalty program information for a specific contact.

using Sitecore.XConnect;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MigrationTool.Examples.Loyalty
{
    [FacetKey(DefaultFacetKey)]
    public class LoyaltyProgramInfo : Facet
    {
        public const string DefaultFacetKey = "LoyaltyProgram";

        public LoyaltyProgramInfo()
        {
        }

        public int MembershipId { get; set; }

        public DateTime EnrollmentDate { get; set; }

        public string HomeStoreId { get; set; }
    }
}

A custom model is needed to notify xConnect that the custom facet is available to contacts in xDB.

using Sitecore.DataExchange.Tools.XdbDataMigration.Models;
using Sitecore.XConnect;
using Sitecore.XConnect.Schema;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MigrationTool.Examples.Loyalty
{
    public class CustomMigrationModel
    {
        public static XdbModel Model { get; } = BuildModel();

        private static XdbModel BuildModel()
        {
            var modelVersion = new XdbModelVersion(1, 0);
            var builder = new XdbModelBuilder("MigrationTool.Examples.CustomMigrationModel", modelVersion);
            builder.ReferenceModel(DataMigrationCollectionModel.Model);
            builder.DefineFacet<Contact, LoyaltyProgramInfo>(LoyaltyProgramInfo.DefaultFacetKey);
            return builder.BuildModel();
        }
    }
}

Build the project and deploy the assembly to your Sitecore server.

Registering the model with Data Exchange Framework (DEF) makes it easier to incorporate the model into the data migration process.