Definitions for "VARCHAR"
a variable length string field
A data type. VARCHAR(20) a string with 20 characters.
A Variable Character Field (or varchar) is a set of character data of indeterminate length.
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Designates a varchar field type in SQL
(SQL*Plus User's Guide and Reference; search in this book)
An Oracle Corporation datatype. Specifically, this datatype functions identically to the Oracle7 VARCHAR2 datatype (see definition below). However, Oracle Corporation recommends that you use VARCHAR2 instead of VARCHAR because Oracle Corporation may change the functionality of VARCHAR in the future.