Each dataset is a separate file on disk All the contents in each personal geodatabase are held in a single Microsoft Access file (.mdb). Size Limits Up to DBMS limits : One TB for each dataset. Each file geodatabase can hold many datasets Two GB per Access database Versioning Support
Vitamin B12, also called cobalamin, is found in foods from animals, such as red meat, fish, poultry, milk, yogurt, and eggs. In recent years, fortified cereals, breads, and other grain products have also become important dietary sources of B12 and folate (identified as folic acid on nutritional labels).
Food. Vitamin B12 is naturally found in animal products, including fish, meat, poultry, eggs, milk, and milk products. Vitamin B12 is generally not present in plant foods, but fortified breakfast cereals are a readily available source of vitamin B12 with high bioavailability for vegetarians [ 5, 13-15 ].Some nutritional yeast products also contain vitamin B12.itamin B12, bound to protein in food, is released by the activity of hydrochloric acid and gastric protease in the stomach [ 5 ]. When synthetic vitamin B12 is added to fortified foods and dietary supplements, it is already in free form and, thus, does not require this separation step.