Data Transformation Engine Database Interface Designer Reference Guide

Chapter 4 - Database Type Trees Table and Query Type Tree Structure
Database Interface Designer Reference Guide
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Note The minimum size of item types for columns in a delimited Row is 0 unless
otherwise specified by the database driver. The minimum size of item types for
columns in a fixed Row equals the maximum size.
Binary Column Types
If a database column corresponds to a binary type, your type tree contains
additional types so that the binary data can be correctly interpreted. The method
used to define binary columns allows a distinction to be made between a NULL
column and a binary value of 0.