Secondary Navigation. 1  Active Duty Dental Care. 2  Guard/Reserve Dental Care. 3  TRICARE Dental Program. 4  TRICARE Retiree Dental Program. 5  Enrolling in the TRICARE Retiree Dental Program. Costs. 6  Dental Benefits for Survivors. 7  Find a Dentist.
â¢ Although char and varchar are character data fields, char is a fixed length data field and varchar is a variable size data field. â¢ Char can store only fixed size non-Unicode string characters, but varchar can store variable sizes of strings.
does the 50 mean the string can be 50 caracters in length or is it 50 bits, or what >> (50) storage size is the actual length in bytes of the data entered, not actualy 50 bytes. Varchar has a max of 8000 characters. >> There will be no performance lose. >> Varchar is for fields that will vary considerably in size.