from datetime import datetime, timezone from sqlalchemy import Column, DateTime, String, UUID, ForeignKey from cognee.infrastructure.databases.relational import Base class DatasetDatabase(Base): __tablename__ = "dataset_database" owner_id = Column(UUID, ForeignKey("principals.id", ondelete="CASCADE"), index=True) dataset_id = Column( UUID, ForeignKey("datasets.id", ondelete="CASCADE"), primary_key=True, index=True ) vector_database_name = Column(String, unique=True, nullable=False) graph_database_name = Column(String, unique=True, nullable=False) vector_database_provider = Column(String, unique=False, nullable=False) graph_database_provider = Column(String, unique=False, nullable=False) vector_database_url = Column(String, unique=False, nullable=True) graph_database_url = Column(String, unique=False, nullable=True) vector_database_key = Column(String, unique=False, nullable=True) graph_database_key = Column(String, unique=False, nullable=True) created_at = Column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)) updated_at = Column(DateTime(timezone=True), onupdate=lambda: datetime.now(timezone.utc))