OpenEdge Data Management: DataServer for Microsoft SQL Server

Chapter 7: The DataServer Tutorial
Table 51: OpenEdge DB to MS SQL Server Conversion Advanced Options
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Interface Elements Description
For field widths use: When pushing fields to a foreign data
source, you can select one of two
primary field format options:
• Width — Uses the value of the
_width field in the _field record.
• 4GL Format — Compiles with the
current default width specified.
(default)
If you select the 4GL Format option,
you have an additional setting to
define:
• Expand x(8) to 30 — This setting is
on by default to indicate that the
format for the character fields
defined as x(8) will be created as 30
characters.
Note: You cannot use the Expand x(8)
to 30 setting with the Width option.
Apply Uniqueness as The Apply Uniqueness as allows to
you specify how uniqueness is defined.
The default, Indexes, provides
backward compatibility. The
Constraints option defines constraint
definitions for uniqueness, but existing
constraint definitions always take
precedence over any constraint
definition generation from this migration
option.
For Create RECID use: Select either Trigger or Computed
Column. Trigger is selected by default.
Computed Column is preferred as it
offers greater reliability, but is only
available for MS SQL Server 2005 and
later.
Include Defaults The Include Defaults check box is
enhanced with an Apply Default as
radio set that allows you to specify if you
want your defaults defined as Field
Attributes (default) or Constraints. The
Field Attributes option provides
backward compatibility. The
Constraints option only defines
constraint definitions if a constraint
definition doesn't already exist. If the
user selects Constraints, then after the
migration, all the initial values defined for
migration become named default
constraint definitions on the server.
298 OpenEdge Data Management: DataServer for Microsoft SQL Server