Ad. To see the problems that arise in the absence of entity integrity through unique primary keys, one could picture a database where an individual's last name is used as the primary key.
Oregon Medical Marijuana Grower Laws. How much medical marijuana can I grow? The laws in regards to growing are very straightforward; you cannot grow more that 6 mature plants and 18 seedlings at any one time. A seedling is a plant less that one foot tall or wide and a mature plant is anything over 1 foot. There are no specific laws saying how big a mature plant can get either. Once the plants are harvested you will want to make sure you have only 24 ounces of usable marijuana. A grower:
Under Measure 91, starting July 1, anyone over 21 in Oregon can possess up to 8 ounces of usable marijuana, such as dried buds at home and up to one ounce outside the home. You can consume marijuana at home or on private property. You can grow up to four plants per residence at home out of public view.