Fiber is commonly classified as soluble, which dissolves in water, or insoluble, which doesn't dissolve. 1  Soluble fiber. 2  This type of fiber dissolves in water to form a gel-like material. 3  It can help lower blood cholesterol and glucose levels. It can help lower blood cholesterol and glucose levels. 2  Soluble fiber is found in oats, peas, beans, apples, citrus fruits, carrots, barley and psyllium. 3  Insoluble fiber.
What is a Key field in a Database and How should I choose one? Keys are crucial to a table structure for many reasons, some of which are identified below: 1  They ensure that each record in a table is precisely identified.  They help establish and enforce various types of integrity.
A key is a sequence of one or more field IDs from the table. Up to 40 keys can be associated to a table. The first key in the list is the primary key. The primary key is always active, and the DBMS keeps the table sorted in primary key order and rejects records with duplicate values in primary key fields. Therefore, the values in the primary key must always be unique.