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Chapter 26. Converting Access Objects to... > Understanding the Limitations of the...

Understanding the Limitations of the DAP Conversion Process

Access 2002's new Save As Data Access Page feature is available for table, query, form, and report objects in conventional Jet .mdb files and ADP. Be forewarned—the Save As DAP feature is version 1.0. Like Access 2000's version 1.0 of DAP, Save As DAP 1.0 has a limited repertoire and stumbles when you try to save most Northwind.mdb sample form and report objects as pages. On the other hand, Save As DAP is the quickest and easiest way to create simple data entry pages for tables and to display query result sets in a browser. Saving PivotTable and PivotChart views of queries as pages is the most expeditious method of delivering data analysis pages to intranet users.

Like the Save As XML feature described in Chapter 24, “Exporting and Importing Data with XML,” Save As DAP relies on ReportML to extract the property values of Access objects. The Save As DAP feature substitutes ReportML2LDAP.xsl for ReportML2HTML4.xsl and transforms the intermediate XML data in ReportML format to the combination of XML and DHTML code used by DAP. ReportML2DAP.xsl shares most of ReportML2HTML4.xsl's limitations on support for native Access controls. The most important of the excluded objects are subform, subreport, tab, and bound and unbound object frame controls. You can use HTML inline frames (<IFRAME> elements) and VBScript code to emulate form/subform combinations, but transforming an existing Access form object to a main page and the subform to a page in an embedded frame usually doesn't succeed. Few conventional bound Access forms are suited to saving as pages directly. If you can adapt the page to a banded design, subordinate sections with navigation controls sometimes can take the place of subforms.


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