diff --git a/internal/postgres/tag.go b/internal/postgres/tag.go
index 729d57a..4e851e2 100644
--- a/internal/postgres/tag.go
+++ b/internal/postgres/tag.go
@@ -184,3 +184,97 @@ func DeleteTagAlias(ctx context.Context, db *gorm.DB, tagAliasName models.Anthro
 
 	return nil
 }
+
+func CreateTagGroup(ctx context.Context, db *gorm.DB, tagGroupName models.AnthroveTagGroupName, tagID models.AnthroveTagID) error {
+
+	if tagGroupName == "" {
+		return &otterError.EntityValidationFailed{Reason: "tagGroupName cannot be empty"}
+	}
+	if tagID == "" {
+		return &otterError.EntityValidationFailed{Reason: "tagID cannot be empty"}
+	}
+
+	result := db.WithContext(ctx).Create(&models.TagGroup{
+		Name:  string(tagGroupName),
+		TagID: string(tagID),
+	})
+
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrDuplicatedKey) {
+			return &otterError.EntityAlreadyExists{}
+		}
+		return result.Error
+	}
+
+	log.WithFields(log.Fields{
+		"tag_group_name":   tagGroupName,
+		"tag_group_tag_id": tagID,
+	}).Trace("database: created tagGroup")
+
+	return nil
+}
+
+func GetAllTagGroup(ctx context.Context, db *gorm.DB) ([]models.TagGroup, error) {
+	var tagGroups []models.TagGroup
+
+	result := db.WithContext(ctx).Find(&tagGroups)
+
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			return nil, &otterError.NoDataFound{}
+		}
+		return nil, result.Error
+	}
+
+	log.WithFields(log.Fields{
+		"tag_alias_length": len(tagGroups),
+	}).Trace("database: created tagGroup")
+
+	return tagGroups, nil
+}
+
+func GetAllTagGroupByTag(ctx context.Context, db *gorm.DB, tagID models.AnthroveTagID) ([]models.TagGroup, error) {
+	var tagGroups []models.TagGroup
+
+	if tagID == "" {
+		return nil, &otterError.EntityValidationFailed{Reason: "tagID cannot be empty"}
+	}
+
+	result := db.WithContext(ctx).Where("tag_id = ?", tagID).Find(&tagGroups)
+
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			return nil, &otterError.NoDataFound{}
+		}
+		return nil, result.Error
+	}
+
+	log.WithFields(log.Fields{
+		"tag_alias_length": len(tagGroups),
+		"tag_alias_tag_id": tagID,
+	}).Trace("database: get specific tagGroup")
+
+	return tagGroups, nil
+}
+
+func DeleteTagGroup(ctx context.Context, db *gorm.DB, tagGroupName models.AnthroveTagGroupName) error {
+
+	if tagGroupName == "" {
+		return &otterError.EntityValidationFailed{Reason: "tagGroupName cannot be empty"}
+	}
+
+	result := db.WithContext(ctx).Delete(&models.TagGroup{Name: string(tagGroupName)})
+
+	if result.Error != nil {
+		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
+			return &otterError.NoDataFound{}
+		}
+		return result.Error
+	}
+
+	log.WithFields(log.Fields{
+		"tag_alias_name": tagGroupName,
+	}).Trace("database: deleted tagAlias")
+
+	return nil
+}
diff --git a/internal/postgres/tag_test.go b/internal/postgres/tag_test.go
index 54f8c03..adbc867 100644
--- a/internal/postgres/tag_test.go
+++ b/internal/postgres/tag_test.go
@@ -596,3 +596,352 @@ func TestDeleteTagAlias(t *testing.T) {
 		})
 	}
 }
+
+func TestCreateTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+
+	validTagGroupName01 := models.AnthroveTagGroupName("httyd")
+	validTagGroupName02 := models.AnthroveTagGroupName("dragon")
+
+	validTagID := models.AnthroveTagID("toothless")
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	err = CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Test
+	type args struct {
+		ctx          context.Context
+		db           *gorm.DB
+		tagGroupName models.AnthroveTagGroupName
+		tagID        models.AnthroveTagID
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid Data",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: validTagGroupName01,
+				tagID:        validTagID,
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 2: No TagGroupName",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: "",
+				tagID:        validTagID,
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 4: No tagID",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: validTagGroupName01,
+				tagID:        "",
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 5: Duplicate tagID",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: validTagGroupName01,
+				tagID:        validTagID,
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 6: Invalide tagID",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: validTagGroupName02,
+				tagID:        "aaa",
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := CreateTagGroup(tt.args.ctx, tt.args.db, tt.args.tagGroupName, tt.args.tagID); (err != nil) != tt.wantErr {
+				t.Errorf("CreateTagGroup() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestGetAllTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	expectedResult := []models.TagGroup{
+		{
+			Name:  string(validTagGroupes[0]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[1]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[2]),
+			TagID: string(validTagID),
+		},
+	}
+
+	err = CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx context.Context
+		db  *gorm.DB
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    []models.TagGroup
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Get Data",
+			args: args{
+				ctx: ctx,
+				db:  gormDB,
+			},
+			want:    expectedResult,
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := GetAllTagGroup(tt.args.ctx, tt.args.db)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("GetAllTagGroup() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GetAllTagGroup() got = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestGetAllTagGroupByTag(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	expectedResult := []models.TagGroup{
+		{
+			Name:  string(validTagGroupes[0]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[1]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[2]),
+			TagID: string(validTagID),
+		},
+	}
+
+	err = CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx   context.Context
+		db    *gorm.DB
+		tagID models.AnthroveTagID
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    []models.TagGroup
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid TagID",
+			args: args{
+				ctx:   ctx,
+				db:    gormDB,
+				tagID: validTagID,
+			},
+			want:    expectedResult,
+			wantErr: false,
+		},
+		{
+			name: "Test 2: No TagID",
+			args: args{
+				ctx:   ctx,
+				db:    gormDB,
+				tagID: "",
+			},
+			want:    nil,
+			wantErr: true,
+		},
+		{
+			name: "Test 3: Invalid TagID",
+			args: args{
+				ctx:   ctx,
+				db:    gormDB,
+				tagID: "adads",
+			},
+			want:    []models.TagGroup{},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := GetAllTagGroupByTag(tt.args.ctx, tt.args.db, tt.args.tagID)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("GetAllTagGroupByTag() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GetAllTagGroupByTag() got = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestDeleteTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	err = CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx          context.Context
+		db           *gorm.DB
+		tagGroupName models.AnthroveTagGroupName
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: validTagGroupes[0],
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 2: Invalid AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: "asdad",
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 3: No AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				db:           gormDB,
+				tagGroupName: "",
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := DeleteTagGroup(tt.args.ctx, tt.args.db, tt.args.tagGroupName); (err != nil) != tt.wantErr {
+				t.Errorf("DeleteTagAlias() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
diff --git a/pkg/database/postgres.go b/pkg/database/postgres.go
index 1eb22de..39c7a54 100644
--- a/pkg/database/postgres.go
+++ b/pkg/database/postgres.go
@@ -181,24 +181,20 @@ func (p *postgresqlConnection) DeleteTagAlias(ctx context.Context, tagAliasName
 	return postgres.DeleteTagAlias(ctx, p.db, tagAliasName)
 }
 
-func (p *postgresqlConnection) CreateTagGroup(ctx context.Context, tagGroupName models.AnthroveTagGroupName, tagID models.AnthroveTagID) {
-	//TODO implement me
-	panic("implement me")
+func (p *postgresqlConnection) CreateTagGroup(ctx context.Context, tagGroupName models.AnthroveTagGroupName, tagID models.AnthroveTagID) error {
+	return postgres.CreateTagGroup(ctx, p.db, tagGroupName, tagID)
 }
 
 func (p *postgresqlConnection) GetAllTagGroup(ctx context.Context) ([]models.TagGroup, error) {
-	//TODO implement me
-	panic("implement me")
+	return postgres.GetAllTagGroup(ctx, p.db)
 }
 
 func (p *postgresqlConnection) GetAllTagGroupByTag(ctx context.Context, tagID models.AnthroveTagID) ([]models.TagGroup, error) {
-	//TODO implement me
-	panic("implement me")
+	return postgres.GetAllTagGroupByTag(ctx, p.db, tagID)
 }
 
 func (p *postgresqlConnection) DeleteTagGroup(ctx context.Context, tagGroupName models.AnthroveTagGroupName) error {
-	//TODO implement me
-	panic("implement me")
+	return postgres.DeleteTagGroup(ctx, p.db, tagGroupName)
 }
 
 // HELPER
diff --git a/pkg/database/postgres_test.go b/pkg/database/postgres_test.go
index acd0b0e..d53f9e2 100644
--- a/pkg/database/postgres_test.go
+++ b/pkg/database/postgres_test.go
@@ -2367,3 +2367,352 @@ func Test_postgresqlConnection_DeleteTagAlias(t *testing.T) {
 		})
 	}
 }
+
+//--------------------------
+
+func Test_postgresqlConnection_CreateTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+
+	validTagGroupName01 := models.AnthroveTagGroupName("httyd")
+	validTagGroupName02 := models.AnthroveTagGroupName("dragon")
+
+	validTagID := models.AnthroveTagID("toothless")
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	err = postgres.CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Test
+	type args struct {
+		ctx          context.Context
+		tagGroupName models.AnthroveTagGroupName
+		tagID        models.AnthroveTagID
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid Data",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: validTagGroupName01,
+				tagID:        validTagID,
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 2: No TagGroupName",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: "",
+				tagID:        validTagID,
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 4: No tagID",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: validTagGroupName01,
+				tagID:        "",
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 5: Duplicate tagID",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: validTagGroupName01,
+				tagID:        validTagID,
+			},
+			wantErr: true,
+		},
+		{
+			name: "Test 6: Invalide tagID",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: validTagGroupName02,
+				tagID:        "aaa",
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			p := &postgresqlConnection{
+				db:    gormDB,
+				debug: true,
+			}
+			if err := p.CreateTagGroup(tt.args.ctx, tt.args.tagGroupName, tt.args.tagID); (err != nil) != tt.wantErr {
+				t.Errorf("CreateTagGroup() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func Test_postgresqlConnection_GetAllTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	expectedResult := []models.TagGroup{
+		{
+			Name:  string(validTagGroupes[0]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[1]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[2]),
+			TagID: string(validTagID),
+		},
+	}
+
+	err = postgres.CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = postgres.CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx context.Context
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    []models.TagGroup
+		wantErr bool
+	}{
+		{
+			name:    "Test 1: Get Data",
+			args:    args{ctx: ctx},
+			want:    expectedResult,
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			p := &postgresqlConnection{
+				db:    gormDB,
+				debug: true,
+			}
+			got, err := p.GetAllTagGroup(tt.args.ctx)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("GetAllTagGroup() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GetAllTagGroup() got = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_postgresqlConnection_GetAllTagGroupByTag(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	expectedResult := []models.TagGroup{
+		{
+			Name:  string(validTagGroupes[0]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[1]),
+			TagID: string(validTagID),
+		},
+		{
+			Name:  string(validTagGroupes[2]),
+			TagID: string(validTagID),
+		},
+	}
+
+	err = postgres.CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = postgres.CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx   context.Context
+		tagID models.AnthroveTagID
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    []models.TagGroup
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid TagID",
+			args: args{
+				ctx:   ctx,
+				tagID: validTagID,
+			},
+			want:    expectedResult,
+			wantErr: false,
+		},
+		{
+			name: "Test 2: No TagID",
+			args: args{
+				ctx:   ctx,
+				tagID: "",
+			},
+			want:    nil,
+			wantErr: true,
+		},
+		{
+			name: "Test 3: Invalid TagID",
+			args: args{
+				ctx:   ctx,
+				tagID: "adads",
+			},
+			want:    []models.TagGroup{},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			p := &postgresqlConnection{
+				db:    gormDB,
+				debug: true,
+			}
+			got, err := p.GetAllTagGroupByTag(tt.args.ctx, tt.args.tagID)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("GetAllTagGroupByTag() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GetAllTagGroupByTag() got = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_postgresqlConnection_DeleteTagGroup(t *testing.T) {
+	// Setup trow away container
+	ctx := context.Background()
+	container, gormDB, err := test.StartPostgresContainer(ctx)
+	if err != nil {
+		t.Fatalf("Could not start PostgreSQL container: %v", err)
+	}
+	defer container.Terminate(ctx)
+
+	// Setup Test
+	validTagID := models.AnthroveTagID("toothless")
+	validTagGroupes := []models.AnthroveTagGroupName{"httyd", "dragon", "scaly"}
+
+	validTag := &models.Tag{
+		Name: string(validTagID),
+		Type: models.Character,
+	}
+
+	err = postgres.CreateTag(ctx, gormDB, validTag)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, tagGroupName := range validTagGroupes {
+		err = postgres.CreateTagGroup(ctx, gormDB, tagGroupName, validTagID)
+	}
+
+	// Test
+	type args struct {
+		ctx          context.Context
+		tagGroupName models.AnthroveTagGroupName
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "Test 1: Valid AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: validTagGroupes[0],
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 2: Invalid AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: "asdad",
+			},
+			wantErr: false,
+		},
+		{
+			name: "Test 3: No AnthroveTagGroupName",
+			args: args{
+				ctx:          ctx,
+				tagGroupName: "",
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			p := &postgresqlConnection{
+				db:    gormDB,
+				debug: true,
+			}
+			if err := p.DeleteTagGroup(tt.args.ctx, tt.args.tagGroupName); (err != nil) != tt.wantErr {
+				t.Errorf("DeleteTagAlias() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
diff --git a/pkg/database/taggroup.go b/pkg/database/taggroup.go
index 594cd1e..f25bd68 100644
--- a/pkg/database/taggroup.go
+++ b/pkg/database/taggroup.go
@@ -7,7 +7,7 @@ import (
 )
 
 type TagGroup interface {
-	CreateTagGroup(ctx context.Context, tagGroupName models.AnthroveTagGroupName, tagID models.AnthroveTagID)
+	CreateTagGroup(ctx context.Context, tagGroupName models.AnthroveTagGroupName, tagID models.AnthroveTagID) error
 
 	GetAllTagGroup(ctx context.Context) ([]models.TagGroup, error)