diff --git a/1-Adapter/src/main/java/persistence/CSVCategoryPersistenceAdapter.java b/1-Adapter/src/main/java/persistence/CSVCategoryPersistenceAdapter.java
new file mode 100644
index 0000000..ff56cd5
--- /dev/null
+++ b/1-Adapter/src/main/java/persistence/CSVCategoryPersistenceAdapter.java
@@ -0,0 +1,19 @@
+package persistence;
+
+import category.Category;
+import category.CategoryPersistenceAdapter;
+
+import java.util.Set;
+
+public class CSVCategoryPersistenceAdapter implements CategoryPersistenceAdapter {
+
+	@Override
+	public Set<Category> getAll() {
+		return null;
+	}
+
+	@Override
+	public Boolean add(Category category) {
+		return null;
+	}
+}
diff --git a/1-Adapter/src/main/java/persistence/CategoryEntity.java b/1-Adapter/src/main/java/persistence/CategoryEntity.java
new file mode 100644
index 0000000..2f092b1
--- /dev/null
+++ b/1-Adapter/src/main/java/persistence/CategoryEntity.java
@@ -0,0 +1,5 @@
+package persistence;
+
+public record CategoryEntity(String name, int id) {
+
+}