lmiranda
fcaefabce8
- Remove DimTRREBDistrict model and FactPurchases model - Remove TRREBDistrict schema and AreaType enum - Remove TRREBDistrictParser from geo parsers - Remove load_trreb_districts from dimension loaders - Remove create_district_map from choropleth figures - Remove get_demo_districts and get_demo_purchase_data from demo_data - Update summary metrics to remove purchase-related metrics - Update callbacks to remove TRREB-related comments - Update methodology page to remove TRREB data source section - Update dashboard data notice to remove TRREB mention Closes #49 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
"""SQLAlchemy models for fact tables."""
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from sqlalchemy import ForeignKey, Integer, Numeric, String
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from .base import Base
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class FactRentals(Base):
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"""Fact table for CMHC rental market data.
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Grain: One row per zone per bedroom type per survey year.
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"""
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__tablename__ = "fact_rentals"
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id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
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date_key: Mapped[int] = mapped_column(
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Integer, ForeignKey("dim_time.date_key"), nullable=False
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)
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zone_key: Mapped[int] = mapped_column(
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Integer, ForeignKey("dim_cmhc_zone.zone_key"), nullable=False
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)
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bedroom_type: Mapped[str] = mapped_column(String(20), nullable=False)
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universe: Mapped[int | None] = mapped_column(Integer, nullable=True)
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avg_rent: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
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median_rent: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
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vacancy_rate: Mapped[float | None] = mapped_column(Numeric(5, 2), nullable=True)
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availability_rate: Mapped[float | None] = mapped_column(
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Numeric(5, 2), nullable=True
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)
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turnover_rate: Mapped[float | None] = mapped_column(Numeric(5, 2), nullable=True)
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rent_change_pct: Mapped[float | None] = mapped_column(Numeric(5, 2), nullable=True)
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reliability_code: Mapped[str | None] = mapped_column(String(2), nullable=True)
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# Relationships
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time = relationship("DimTime", backref="rentals")
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zone = relationship("DimCMHCZone", backref="rentals")
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