diff --git a/.gitignore b/.gitignore
index ca1c7a3..33e5e1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -398,3 +398,6 @@ FodyWeavers.xsd
 # JetBrains Rider
 *.sln.iml
 
+# sqlite databases
+*.db
+*.sqlite
\ No newline at end of file
diff --git a/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.Designer.cs b/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.Designer.cs
new file mode 100644
index 0000000..fb4382f
--- /dev/null
+++ b/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.Designer.cs
@@ -0,0 +1,152 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using PiwigoDirectorySync.Persistence;
+
+#nullable disable
+
+namespace PiwigoDirectorySync.Migrations
+{
+    [DbContext(typeof(PersistenceContext))]
+    [Migration("20230830195902_InitialCreate")]
+    partial class InitialCreate
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "7.0.10");
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.AlbumEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("DirectoryName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("ParentId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("PiwigoAlbumId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ServerId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ParentId");
+
+                    b.HasIndex("PiwigoAlbumId");
+
+                    b.HasIndex("ServerId");
+
+                    b.ToTable("PiwigoAlbums");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.ImageEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AlbumId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("DeleteRequired")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("FilePath")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("LastChange")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Md5Sum")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("ServerImageId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("UploadRequired")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AlbumId");
+
+                    b.ToTable("PiwigoImages");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.PiwigoServerEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("RootDirectory")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Url")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("PiwigoServers");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.AlbumEntity", b =>
+                {
+                    b.HasOne("PiwigoDirectorySync.Persistence.AlbumEntity", "Parent")
+                        .WithMany()
+                        .HasForeignKey("ParentId");
+
+                    b.HasOne("PiwigoDirectorySync.Persistence.PiwigoServerEntity", "Server")
+                        .WithMany()
+                        .HasForeignKey("ServerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Parent");
+
+                    b.Navigation("Server");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.ImageEntity", b =>
+                {
+                    b.HasOne("PiwigoDirectorySync.Persistence.AlbumEntity", "Album")
+                        .WithMany()
+                        .HasForeignKey("AlbumId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Album");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.cs b/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.cs
new file mode 100644
index 0000000..c1c4fba
--- /dev/null
+++ b/PiwigoDirectorySync/Migrations/20230830195902_InitialCreate.cs
@@ -0,0 +1,123 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace PiwigoDirectorySync.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "PiwigoServers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Name = table.Column<string>(type: "TEXT", nullable: false),
+                    Url = table.Column<string>(type: "TEXT", nullable: false),
+                    Username = table.Column<string>(type: "TEXT", nullable: false),
+                    Password = table.Column<string>(type: "TEXT", nullable: false),
+                    RootDirectory = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PiwigoServers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PiwigoAlbums",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    PiwigoAlbumId = table.Column<int>(type: "INTEGER", nullable: true),
+                    DirectoryName = table.Column<string>(type: "TEXT", nullable: false),
+                    ParentId = table.Column<int>(type: "INTEGER", nullable: true),
+                    ServerId = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PiwigoAlbums", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PiwigoAlbums_PiwigoAlbums_ParentId",
+                        column: x => x.ParentId,
+                        principalTable: "PiwigoAlbums",
+                        principalColumn: "Id");
+                    table.ForeignKey(
+                        name: "FK_PiwigoAlbums_PiwigoServers_ServerId",
+                        column: x => x.ServerId,
+                        principalTable: "PiwigoServers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PiwigoImages",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    ServerImageId = table.Column<int>(type: "INTEGER", nullable: true),
+                    FilePath = table.Column<string>(type: "TEXT", nullable: false),
+                    LastChange = table.Column<DateTime>(type: "TEXT", nullable: false),
+                    Md5Sum = table.Column<string>(type: "TEXT", nullable: true),
+                    AlbumId = table.Column<int>(type: "INTEGER", nullable: false),
+                    UploadRequired = table.Column<bool>(type: "INTEGER", nullable: false),
+                    DeleteRequired = table.Column<bool>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PiwigoImages", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PiwigoImages_PiwigoAlbums_AlbumId",
+                        column: x => x.AlbumId,
+                        principalTable: "PiwigoAlbums",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PiwigoAlbums_ParentId",
+                table: "PiwigoAlbums",
+                column: "ParentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PiwigoAlbums_PiwigoAlbumId",
+                table: "PiwigoAlbums",
+                column: "PiwigoAlbumId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PiwigoAlbums_ServerId",
+                table: "PiwigoAlbums",
+                column: "ServerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PiwigoImages_AlbumId",
+                table: "PiwigoImages",
+                column: "AlbumId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PiwigoServers_Name",
+                table: "PiwigoServers",
+                column: "Name",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "PiwigoImages");
+
+            migrationBuilder.DropTable(
+                name: "PiwigoAlbums");
+
+            migrationBuilder.DropTable(
+                name: "PiwigoServers");
+        }
+    }
+}
diff --git a/PiwigoDirectorySync/Migrations/PersistenceContextModelSnapshot.cs b/PiwigoDirectorySync/Migrations/PersistenceContextModelSnapshot.cs
new file mode 100644
index 0000000..0ae48b7
--- /dev/null
+++ b/PiwigoDirectorySync/Migrations/PersistenceContextModelSnapshot.cs
@@ -0,0 +1,149 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using PiwigoDirectorySync.Persistence;
+
+#nullable disable
+
+namespace PiwigoDirectorySync.Migrations
+{
+    [DbContext(typeof(PersistenceContext))]
+    partial class PersistenceContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "7.0.10");
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.AlbumEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("DirectoryName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("ParentId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("PiwigoAlbumId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("ServerId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ParentId");
+
+                    b.HasIndex("PiwigoAlbumId");
+
+                    b.HasIndex("ServerId");
+
+                    b.ToTable("PiwigoAlbums");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.ImageEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AlbumId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("DeleteRequired")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("FilePath")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("LastChange")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Md5Sum")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("ServerImageId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<bool>("UploadRequired")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AlbumId");
+
+                    b.ToTable("PiwigoImages");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.PiwigoServerEntity", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("RootDirectory")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Url")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Username")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("PiwigoServers");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.AlbumEntity", b =>
+                {
+                    b.HasOne("PiwigoDirectorySync.Persistence.AlbumEntity", "Parent")
+                        .WithMany()
+                        .HasForeignKey("ParentId");
+
+                    b.HasOne("PiwigoDirectorySync.Persistence.PiwigoServerEntity", "Server")
+                        .WithMany()
+                        .HasForeignKey("ServerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Parent");
+
+                    b.Navigation("Server");
+                });
+
+            modelBuilder.Entity("PiwigoDirectorySync.Persistence.ImageEntity", b =>
+                {
+                    b.HasOne("PiwigoDirectorySync.Persistence.AlbumEntity", "Album")
+                        .WithMany()
+                        .HasForeignKey("AlbumId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Album");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/PiwigoDirectorySync/Persistence/AlbumEntity.cs b/PiwigoDirectorySync/Persistence/AlbumEntity.cs
index 28ceb69..ea62072 100644
--- a/PiwigoDirectorySync/Persistence/AlbumEntity.cs
+++ b/PiwigoDirectorySync/Persistence/AlbumEntity.cs
@@ -4,19 +4,23 @@ using Microsoft.EntityFrameworkCore;
 
 namespace PiwigoDirectorySync.Persistence;
 
+[Index(nameof(ParentId))]
+[Index(nameof(PiwigoAlbumId))]
 public class AlbumEntity
 {
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
     public int Id { get; set; }
 
+    public int? PiwigoAlbumId { get; set; }
+    public required string DirectoryName { get; set; }
+
     public int? ParentId { get; set; }
     public AlbumEntity? Parent { get; set; }
+
     public required int ServerId { get; set; }
     public PiwigoServerEntity Server { get; set; } = null!;
-    public required string Name { get; set; }
-    public required string DirectoryName { get; set; }
-    public string FullDirectory => Parent is not null ? $"{Parent.FullDirectory}{Path.DirectorySeparatorChar}{DirectoryName}" : DirectoryName;
 
-    public int? PiwigoAlbumId { get; set; }
+    public string FullPath =>
+        Parent is not null ? $"{Parent.FullPath}{Path.DirectorySeparatorChar}{DirectoryName}" : $"{Server.RootDirectory}{Path.DirectorySeparatorChar}{DirectoryName}";
 }
\ No newline at end of file
diff --git a/PiwigoDirectorySync/Persistence/ImageEntity.cs b/PiwigoDirectorySync/Persistence/ImageEntity.cs
index 201ae8b..d319c41 100644
--- a/PiwigoDirectorySync/Persistence/ImageEntity.cs
+++ b/PiwigoDirectorySync/Persistence/ImageEntity.cs
@@ -4,17 +4,22 @@ using Microsoft.EntityFrameworkCore;
 
 namespace PiwigoDirectorySync.Persistence;
 
+[Index(nameof(AlbumId))]
 public class ImageEntity
 {
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
     public int Id { get; set; }
-    public required string Filename { get; set; }
+    public int? ServerImageId { get; set; }
+
+    public required string FilePath { get; set; }
+
     public DateTime LastChange { get; set; }
     public string? Md5Sum { get; set; }
+
     public required int AlbumId { get; set; }
     public AlbumEntity Album { get; set; } = null!;
-    public int ServerImageId { get; set; }
+
     public bool UploadRequired { get; set; }
     public bool DeleteRequired { get; set; }
 }
\ No newline at end of file
diff --git a/PiwigoDirectorySync/Persistence/PiwigoServerEntity.cs b/PiwigoDirectorySync/Persistence/PiwigoServerEntity.cs
index c51668e..063077e 100644
--- a/PiwigoDirectorySync/Persistence/PiwigoServerEntity.cs
+++ b/PiwigoDirectorySync/Persistence/PiwigoServerEntity.cs
@@ -10,7 +10,6 @@ public class PiwigoServerEntity
     [Key]
     [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
     public int Id { get; set; }
-
     public required string Name { get; set; }
     public required string Url { get; set; }
     public required string Username { get; set; }
diff --git a/PiwigoDirectorySync/addMigration.ps1 b/PiwigoDirectorySync/dbAddMigration.ps1
similarity index 50%
rename from PiwigoDirectorySync/addMigration.ps1
rename to PiwigoDirectorySync/dbAddMigration.ps1
index 5fd66a3..23ea7bc 100644
--- a/PiwigoDirectorySync/addMigration.ps1
+++ b/PiwigoDirectorySync/dbAddMigration.ps1
@@ -2,4 +2,3 @@ $comment=$args[0]
 
 write-host "adding migration for Sqlite"
 dotnet ef migrations add --project PiwigoDirectorySync.csproj --startup-project PiwigoDirectorySync.csproj --context PiwigoDirectorySync.Persistence.PersistenceContext "$comment" --output-dir Migrations -- --DbProvider Sqlite
-#dotnet ef migrations add --project PiwigoDirectorySync/PiwigoDirectorySync.csproj --startup-project PiwigoDirectorySync/PiwigoDirectorySync.csproj --context PiwigoDirectorySync.Persistence.Persistence.PersistenceContext "$comment" --output-dir Migrations -- --DbProvider Sqlite
diff --git a/PiwigoDirectorySync/dbUpdateSqlite.ps1 b/PiwigoDirectorySync/dbUpdateSqlite.ps1
new file mode 100644
index 0000000..08914b0
--- /dev/null
+++ b/PiwigoDirectorySync/dbUpdateSqlite.ps1
@@ -0,0 +1,2 @@
+write-host "updating Sqlite db"
+dotnet ef database update --project PiwigoDirectorySync.csproj --startup-project PiwigoDirectorySync.csproj --context PiwigoDirectorySync.Persistence.PersistenceContext --configuration Debug -- DbProvider Sqlite
diff --git a/identifier.sqlite b/identifier.sqlite
new file mode 100644
index 0000000..e69de29