feat(models): add basic database structure

7project/backend/alembic/versions/a60134ef6c4c_add_categories.py

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+"""add categories
+
+Revision ID: a60134ef6c4c
+Revises: c5e9d6c59812
+Create Date: 2025-10-09 14:29:31.170347
+
+"""
+from typing import Sequence, Union
+
+import fastapi_users_db_sqlalchemy
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'a60134ef6c4c'
+down_revision: Union[str, Sequence[str], None] = 'c5e9d6c59812'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('categories',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.String(length=100), nullable=False),
+    sa.Column('description', sa.String(length=255), nullable=True),
+    sa.Column('user_id', fastapi_users_db_sqlalchemy.generics.GUID(), nullable=False),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('category_transaction',
+    sa.Column('id_category', sa.Integer(), nullable=True),
+    sa.Column('id_transaction', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['id_category'], ['categories.id'], ),
+    sa.ForeignKeyConstraint(['id_transaction'], ['transaction.id'], )
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('category_transaction')
+    op.drop_table('categories')
+    # ### end Alembic commands ###

7project/backend/alembic/versions/c5e9d6c59812_user_transaction_relationship.py

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+"""User transaction relationship
+
+Revision ID: c5e9d6c59812
+Revises: 81f275275556
+Create Date: 2025-10-09 14:17:19.983889
+
+"""
+from typing import Sequence, Union
+
+import fastapi_users_db_sqlalchemy
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'c5e9d6c59812'
+down_revision: Union[str, Sequence[str], None] = '81f275275556'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('transaction', 'user_id',
+               existing_type=sa.UUID(),
+               type_=fastapi_users_db_sqlalchemy.generics.GUID(),
+               existing_nullable=False)
+    op.create_foreign_key(None, 'transaction', 'user', ['user_id'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'transaction', type_='foreignkey')
+    op.alter_column('transaction', 'user_id',
+               existing_type=fastapi_users_db_sqlalchemy.generics.GUID(),
+               type_=sa.UUID(),
+               existing_nullable=False)
+    # ### end Alembic commands ###