diff --git a/plesna/storage/metadata_repository/fs_metadata_repository.py b/plesna/storage/metadata_repository/fs_metadata_repository.py
index a2a1de3..4d9f408 100644
--- a/plesna/storage/metadata_repository/fs_metadata_repository.py
+++ b/plesna/storage/metadata_repository/fs_metadata_repository.py
@@ -1,11 +1,12 @@
 from pathlib import Path
+from datetime import datetime
 import csv
 import json
 
 from plesna.storage.metadata_repository.metadata_repository import (
-    ExecutionMetaData,
+    ExecutionLog,
     MetaDataRepository,
-    ModificationMetaData,
+    ModificationLog,
 )
 
 
@@ -38,28 +39,28 @@ class FSMetaDataRepository(MetaDataRepository):
         filepath = self._basepath / self.EXECUTION_FILEMODEL.format(flux_id=flux_id)
         filepath.touch()
         with open(filepath, "a") as csvfile:
-            writer = csv.DictWriter(csvfile, fieldnames=ExecutionMetaData.model_fields.keys())
+            writer = csv.DictWriter(csvfile, fieldnames=ExecutionLog.model_fields.keys())
             writer.writeheader()
         return flux_id
 
-    def register_flux_execution(self, flux_id: str, metadata: dict) -> ExecutionMetaData:
+    def register_flux_execution(self, flux_id: str, dt: datetime, output: dict) -> ExecutionLog:
         """Get the flux metadata"""
         filepath = self._basepath / self.EXECUTION_FILEMODEL.format(flux_id=flux_id)
-        metadata_ = ExecutionMetaData(**metadata)
+        metadata_ = ExecutionLog(datetime=dt, output={"data": output})
         if not filepath.exists:
             raise FSMetaDataRepositoryError(f"The flux {flux_id} hasn't been added yet.")
 
         with open(filepath, "a") as csvfile:
-            writer = csv.DictWriter(csvfile, fieldnames=ExecutionMetaData.model_fields.keys())
+            writer = csv.DictWriter(csvfile, fieldnames=ExecutionLog.model_fields.keys())
             writer.writerow(metadata_.to_flat_dict())
 
         return metadata_
 
-    def flux(self, flux_id: str) -> ExecutionMetaData:
+    def flux(self, flux_id: str) -> ExecutionLog:
         """Get the flux metadata"""
         raise NotImplementedError
 
-    def flux_logs(self, flux_id: str) -> list[ExecutionMetaData]:
+    def flux_logs(self, flux_id: str) -> list[ExecutionLog]:
         """Get the flux metadata"""
         filepath = self._basepath / self.EXECUTION_FILEMODEL.format(flux_id=flux_id)
         if not filepath.exists:
@@ -69,13 +70,13 @@ class FSMetaDataRepository(MetaDataRepository):
             reader = csv.DictReader(csvfile)
             for row in reader:
                 row["output"] = json.loads(row["output"])
-                logs.append(ExecutionMetaData(**row))
+                logs.append(ExecutionLog(**row))
         return logs
 
     def tables(self) -> list[str]:
         """List table's name in schema (the id)"""
         raise NotImplementedError
 
-    def table(self, table_id: str) -> ModificationMetaData:
+    def table(self, table_id: str) -> ModificationLog:
         """Get table's metadatas"""
         raise NotImplementedError
diff --git a/plesna/storage/metadata_repository/metadata_repository.py b/plesna/storage/metadata_repository/metadata_repository.py
index 151749d..f7a7def 100644
--- a/plesna/storage/metadata_repository/metadata_repository.py
+++ b/plesna/storage/metadata_repository/metadata_repository.py
@@ -6,12 +6,12 @@ from pydantic import BaseModel
 from plesna.models.flux import FluxMetaData
 
 
-class ModificationMetaData(BaseModel):
+class ModificationLog(BaseModel):
     datetime: datetime
     flux_id: str
 
 
-class ExecutionMetaData(BaseModel):
+class ExecutionLog(BaseModel):
     datetime: datetime
     output: FluxMetaData
 
@@ -36,17 +36,17 @@ class MetaDataRepository:
         raise NotImplementedError
 
     @abc.abstractmethod
-    def register_flux_execution(self, flux_id: str, metadata: ExecutionMetaData) -> str:
+    def register_flux_execution(self, flux_id: str, dt: datetime, metadata: dict) -> str:
         """Get the flux metadata"""
         raise NotImplementedError
 
     @abc.abstractmethod
-    def flux(self, schema_id: str) -> ExecutionMetaData:
+    def flux(self, schema_id: str) -> ExecutionLog:
         """Get the flux last execution metadata"""
         raise NotImplementedError
 
     @abc.abstractmethod
-    def flux_logs(self, schema_id: str) -> list[ExecutionMetaData]:
+    def flux_logs(self, schema_id: str) -> list[ExecutionLog]:
         """Get all the flux execution metadata"""
         raise NotImplementedError
 
@@ -63,16 +63,16 @@ class MetaDataRepository:
         raise NotImplementedError
 
     @abc.abstractmethod
-    def register_table_modification(self, table_id: str, metadata: ModificationMetaData) -> str:
+    def register_table_modification(self, table_id: str, dt: datetime, metadata: dict) -> str:
         """Get the table metadata"""
         raise NotImplementedError
 
     @abc.abstractmethod
-    def table(self, table_id: str) -> ModificationMetaData:
+    def table(self, table_id: str) -> ModificationLog:
         """Get the last table's modification metadatas"""
         raise NotImplementedError
 
     @abc.abstractmethod
-    def table_logs(self, table_id: str) -> list[ModificationMetaData]:
+    def table_logs(self, table_id: str) -> list[ModificationLog]:
         """Get all table's modification metadatas"""
         raise NotImplementedError
diff --git a/tests/storage/test_fs_metadata_repository.py b/tests/storage/test_fs_metadata_repository.py
index a2d18b2..8e16ab1 100644
--- a/tests/storage/test_fs_metadata_repository.py
+++ b/tests/storage/test_fs_metadata_repository.py
@@ -6,7 +6,7 @@ import pytest
 
 from plesna.models.flux import FluxMetaData
 from plesna.storage.metadata_repository.fs_metadata_repository import FSMetaDataRepository
-from plesna.storage.metadata_repository.metadata_repository import ExecutionMetaData
+from plesna.storage.metadata_repository.metadata_repository import ExecutionLog
 
 
 @pytest.fixture
@@ -44,9 +44,9 @@ def test_register_flux_execution(location, metadata_repository):
 
     metadata_repository.register_flux_execution(
         flux_id,
-        metadata={
-            "datetime": datetime(2023, 3, 15, 14, 30),
-            "output": {"data": {"truc": "machin"}},
+        datetime(2023, 3, 15, 14, 30),
+        output={
+            "truc": "machin",
         },
     )
 
@@ -64,26 +64,24 @@ def test_register_and_get_flux_execution(location, metadata_repository):
 
     metadata_repository.register_flux_execution(
         flux_id,
-        metadata={
-            "datetime": datetime(2023, 3, 15, 14, 30),
-            "output": {"data": {"truc": "machin"}},
-        },
+        datetime(2023, 3, 15, 14, 30),
+        output={"truc": "machin"},
     )
     metadata_repository.register_flux_execution(
         flux_id,
-        metadata={
-            "datetime": datetime(2024, 3, 15, 14, 30),
-            "output": {"data": {"truc": "chose"}},
+        datetime(2024, 3, 15, 14, 30),
+        output={
+            "truc": "chose",
         },
     )
 
     logs = metadata_repository.flux_logs(flux_id)
     assert logs == [
-        ExecutionMetaData(
+        ExecutionLog(
             datetime=datetime(2023, 3, 15, 14, 30),
             output=FluxMetaData(data={"truc": "machin"}),
         ),
-        ExecutionMetaData(
+        ExecutionLog(
             datetime=datetime(2024, 3, 15, 14, 30),
             output=FluxMetaData(data={"truc": "chose"}),
         ),