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The names of parent objects do not need to be known, and parent collections do not need to be populated to retrieve a schema object. Starting with ADO 2.6, ADO MD objects can be retrieved using unique names, as specified by the UniqueName property (ADO MD). ADO 2.7ĪDO 2.7 introduces support for 64-bit processors. If, at any level, a Shape command returns multiple Recordsets, the maximum level of depth will be less than 512. Instead, the maximum level depth is 512, if each command results in a single (child) Recordset. This means that a Shape command can no longer be nested at any depth. The number of Recordsets returned by a nested Shape command has an upper bound.Ī nested shape command now returns a maximum of 512 Recordsets. This prevents the Command object from being misused. Recordset.ActiveCommand returns an error when invoked from an HTML/ASP page. These methods now verify that file handles point to physical files only. Recordset.Open, Recordset.Save, Stream.SaveToFile, and Stream.LoadFromFile operate on physical files only. In cross-domain scripting involving nontrusted sites, the following operations are disabled: Stream.SaveToFile, Stream.LoadFromFile, Recordset.Save, and Recordset.Open, used in conjunction with the adCmdFile flag or with the Microsoft OLE DB Persistence Provider (MSPersist). Hard drive access is not allowed outside a trusted zone. ADO 2.8 addresses several security-related concerns:
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A redistributable version of MDAC 2.8 is also available note that this redistributable version should only be installed on Windows 2000. ADO 2.8ĪDO 2.8 was included in Windows XP and Windows Server 2003, as part of the Microsoft Data Access Components (MDAC) 2.8. ADO 6.0 is functionally equivalent to ADO 2.8. ADO 6.0ĪDO 6.0 is included in Windows Vista, as a part of the Windows Data Access Components (Windows DAC) 6.0. This topic lists the new features introduced by each release of ADO, ADO MD, and ADOX.