OpenEdge Data Management: DataServer for Microsoft SQL Server

Chapter 7: The DataServer Tutorial
Table 44: 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 option is
selected 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 option
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. It comes with the restriction that
you cannot place a server-based INSERT
trigger on the table where the computed
column option has been selected.
Include Defaults The Include Defaults includes an
Apply Default as option 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 you
select Constraints, then after the
migration, all the initial values defined for
migration become default constraint
definitions on the server.
256 OpenEdge Data Management: DataServer for Microsoft SQL Server