diff --git a/lib/DatabaseModel.ts b/lib/DatabaseModel.ts
index 6f03dc3..b84ba56 100644
--- a/lib/DatabaseModel.ts
+++ b/lib/DatabaseModel.ts
@@ -34,4 +34,5 @@ export abstract class DatabaseModel {
 
   public abstract async read(): Promise<boolean>;
   public abstract async write(): Promise<boolean>;
+  public abstract async delete(): Promise<boolean>;
 }