A data type is a set of the following values that can be represented:
·
Non-NULL value
Character
string, LONG column, number, date value,
time
value, time stamp value,
BOOLEAN
As well as specifying the column name when you define columns, you can also specify data types.
If required, a code attribute can also be entered for LONG columns and some kinds of character strings.
See also:
Using data types in SQL statements: data_type