Working base version

src/main/database_module/database_classes/db_classes.py

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+from sqlalchemy import Column, String, Integer, ForeignKey, Date
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.ext.hybrid import hybrid_property
+from sqlalchemy.orm import relationship
+
+from src.main.db_session import DatabaseSession
+
+Base = declarative_base()
+
+class Play(Base):
+    __tablename__ = 'play'
+
+    play_id = Column(String, nullable=False, primary_key=True)
+    pitch_value = Column(Integer, nullable=True)
+    swing_value = Column(Integer, nullable=False)
+    creation_date = Column(Date, nullable=False)
+
+    guesses = relationship(lambda : Guess)
+
+class Guess(Base):
+    __FAKE_VALUE__ = -5000
+
+    __tablename__ = 'guess'
+    member_id = Column(String, nullable=False, primary_key=True)
+    play_id = Column(UUID, ForeignKey(Play.play_id), nullable=False, primary_key=True)
+    guessed_number = Column(Integer, nullable=False)
+    member_name = Column(String, nullable=False)
+    difference = Column(Integer)
+
+    play = relationship("Play", back_populates="guesses")