Add backend/app/models/column.py

backend/app/models/column.py

@@ -0,0 +1,19 @@
+"""Column model."""
+from sqlalchemy import Column, Integer, String, ForeignKey, DateTime
+from sqlalchemy.orm import relationship
+from datetime import datetime
+from app.database import Base
+
+class Column(Base):
+    """Column model."""
+    __tablename__ = "columns"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(255), nullable=False)
+    field_type = Column(String(50), nullable=False)  # text, number, date, select, etc.
+    table_id = Column(Integer, ForeignKey("tables.id"), nullable=False)
+    position = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    table = relationship("Table", back_populates="columns")
+    records = relationship("Record", back_populates="column")