Muscle atrophy, or muscle wasting, results from loss of muscle tissue. Little or no physical exercise and a sedentary lifestyle are common causes of muscle atrophy, in this case called disuse atrophy.
PRIMARY KEY Constraints. A table typically has a column or combination of columns that contain values that uniquely identify each row in the table. This column, or columns, is called the primary key (PK) of the table and enforces the entity integrity of the table.
First create the database and table, manually adding the columns. In which column to be primary key. You should right click this column and set primary key and set the seed value of the primary key. share | improve this answer. edited Aug 28 '12 at 11:58. Ð¯egDwight.