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OpenEdge Data Management: DataServer for Microsoft SQL Server

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<strong>Data</strong> Type Details<br />

C–4<br />

14. When mapping of the MS <strong>SQL</strong> <strong>Server</strong> datetime or smalldatetime data types is to the <strong>OpenEdge</strong> DATE data<br />

type, <strong>OpenEdge</strong> truncates the time portion of the date.<br />

15. The <strong>Data</strong><strong>Server</strong> considers a timestamp data type to be a hidden value. It is not visible to the user, but you can<br />

still access a MS <strong>SQL</strong> <strong>Server</strong> table that contains a timestamp column.<br />

16. Identity columns are limited by <strong>SQL</strong> <strong>Server</strong> to one per table. Creating an identity column to define<br />

PROGRESS_RECID is the preferred method of supporting the ROWID function. See the “ROWID function” section<br />

on page 2–52 <strong>for</strong> more in<strong>for</strong>mation. If your <strong>SQL</strong> <strong>Server</strong> table has an existing identity column, turn off the mandatory<br />

flag, and set its initial value to the Unknown value (?) in your schema holder to prevent the <strong>Data</strong><strong>Server</strong> from<br />

attempting to overwrite the identity value generated by <strong>SQL</strong> <strong>Server</strong>.

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