Prepare monorepo

backend/app/models/meter_value.py

@@ -0,0 +1,17 @@
+import uuid
+from sqlalchemy import Uuid, Column, DateTime, Enum, Float, ForeignKey, String
+
+from app.database import Base
+from app.schemas.meter_value import Measurand, PhaseType
+
+class MeterValue(Base):
+    __tablename__ = "meter_values"
+
+    id = Column(Uuid, primary_key=True, default=uuid.uuid4)
+    timestamp = Column(DateTime, index=True)
+    measurand = Column(Enum(Measurand), index=True)
+    phase_type = Column(Enum(PhaseType), nullable=True)
+    unit = Column(String, nullable=True)
+    value = Column(Float)
+
+    transaction_id = Column(String, ForeignKey("transactions.id"), index=True)