The development_types table

See above. Each row defines one DevelopmentType.

Column Name	Data Type	Description
development_type_id	integer	Unique identifier for this row.
name	varchar	Name of the development type.
min_units	integer	Minimum number of units to be in this development type.
max_units	integer	Maximum number of units to be in this development type.
min_sqft	integer	Minimum square feet to be in this development type.
max_sqft	integer	Maximum square feet to be in this development type.

• development_type_id must be unique and greater than zero.
• We recommend that development_type_ids start at 1 and be sequential.
• min_units must be >= 0.
• max_units must be >= min_units.
• min_sqft must be >= 0.
• max_sqft must be >= min_sqft.
• The development types should not overlap, and should completely cover the space. A grid cell should only be able to be in a single development type.