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!@#$%^&*() basically they are any characters that do not contain the value of a number or a letter.
AnswerIt is data formatting that includes non-standard ASCII characters (characters not included on a standard English-language keyboard)All characters besides:
0123456789
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
and those letters with accents and diacritical marks
and those letters in other alphabet systems
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How many unique values can you assign in a 3 byte alphanumeric field?
There are 26 alphabetic characters (a-z) and 10 numeric (0-9) which together form 36 alphanumeric characters. If you include capital letters, then you have 62 (36 + 26) alphanumeric characters. 62 * 62 * 62 = 238,328
Specify the naming convention for variable constant class and method?
The naming convention for variables, constants, classes, and methods involves delimiting separate words with a non-alphanumeric character such as a hyphen or underscore.
What is the name of the data type used to store long passages of data containing text and alphanumeric characters?
varchar
When a value is read from a memory in c language and preserved this process is called?
Saving. Values can be saved by writing them to non-volatile memory such as a hard-disk file.
What are 3 different data types?
According to Wikipedia,"In computer science and computer programming, a data type or simply type is a classification identifying one of various types of data, such as real-valued, integer or Boolean, that determines the possible values for that type; the operations that can be done on values of that type; the meaning of the data; and the way values of that type can be stored.""Almost all programming languages explicitly include the notion of data type, though different languages may use different terminology. Common data types may include:integers,booleans,characters,floating-point numbers,alphanumeric strings."
