By David Sussman
All programmers operating in database know-how utilizing Microsoft improvement instruments will locate this publication precious. As a reference, it truly is appropriate for novices and skilled programmers alike. this can be a welcome addition and supplement to the other ADO handbook, and its one you want to stick with it the table in any respect times.
This informative consultant offers a whole connection with the ADO API, protecting all models as much as 2.8. Code samples are concise, and emphasis is put on ADO thoughts instead of the categorical environments during which it can be used. a number of the book's highlights include:
- Coverage of comparable applied sciences, akin to ADOX and ADOMD
- Online samples in a number of languages
- Examination of ADO functionality facets
This is the main definitive e-book at the topic thus far, and has been the major reference on ADO due to the fact its first release.
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Additional resources for ADO Programmer’s Reference
There is just one Column object, but what it contains depends upon its parent (Table, Index, or Key). The Columns collection contains all the columns for a particular Table, Key, or Index object. Table Dim objCol As ADOX . Column Set objTbl = objCatalog . Name Next The syntax is very similar when looping through all of the Column objects associated with an Index or a Key object. The Group Object and the Groups Collection A Group object identifies a security group. It contains a list of users in the catalog.
The will. events generally have an argument, adStatus, indicating the status of the event. You can set this argument to adStatusCancel before the method ends, to cancel the action that caused the event. For example, suppose a connection generated a willConnect event; setting adStatus to adStatusCancel will cancel the connection. The ConnectComplete event will then be called, with a status indicating that the connection failed. The nature of events means that there can be several Wi 11 ... events that could result from a single action.
Events can also be used to perform preprocessing and postprocessing around certain ADO operations, such as opening a Recordset or establishing a Connection. Note that ASP scripting languages do not support events on the server. Client-side script does support events. Events For ADO, only the Recordset and Connection objects support events. There are generally two types of events: o wi 11 ... events-those called before an operation starts o ... Complete events-those called after it has completed A few other events are called after an event has completed, but they are not part of the wi 11 ...