May 2007
Intermediate to advanced
1152 pages
30h 53m
English
book
Access™ 2007 VBA Programmer's Reference
by Teresa Hennig, Rob Cooper, Geoffrey Griffith, Armen Stein
Content preview from Access™ 2007 VBA Programmer's Reference
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7.2. Referring to ADO Objects
When you refer to ADO objects, you do so in the same way you would using DAO. The difference is that ADO does not have a native data connection like DAO in ACCDB and MDB databases.
Recall that in DAO you can use the DBEngine(0)(0) object or the CurrentDb() function to return a reference to the current database. ADO does not have a current database. In fact, it doesn't know anything about datasets in the data source; it only knows about data source through the provider. In ADO, you must always implement a connection to an external data store through a provider before any actions can be executed for the data.
As in DAO, an object's parent collection can have a default member to which you can refer. The following table lists the default members for those ADO objects that have them.
| Object Library | Collection | Default Member | Example |
|---|---|---|---|
| ADODB | Command | Parameters | cmd(0) |
| Record | Fields | rcADO(0) | |
| Recordset | Fields | rsADO(0) | |
| ADOX | Catalog | Tables | cat(0) |
| Table | Columns | cat.tables(0)(0) |
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