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ADO.NET and ADO Examples and Best Practices for VB by William R. Vaughn

By William R. Vaughn

ADO.NET and ADO Examples and top Practices for VB Programmers, moment Edition brings the preferred first version modern with clean insights and tips about COM-based ADOand provides a voluminous part at the new ADO.NET expertise. Written in particular for COM-based ADO builders retooling for ADO.NET, it is a developer's ebook, choked with sensible suggestion on the best way to make code run speedier, but be more uncomplicated to put in writing and understand.

Veteran writer William Vaughn courses you thru the knowledge entry maze with working examples and diverse discussions of what works and what does not. Derived from years of expertise operating with facts entry builders, Vaughn's Best Practices are a collection of concepts confirmed to greatly lessen overhead, difficulties, and confusion—for the developer, the method, and the full workforce. whereas a few are very simple to enforce, others require massive wisdom and forethought to enable.

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This is due (partially) to the fact that these native providers don't have to translate from ODBC-speak to the native tongue of the back-end datasource. For example, the SQL Server provider is written to TDS, the Oracle provider to OCI, and the Jet provider to the Microsoft Jet Engine API interfaces. 37 Chapter4 The most important distinction between the two approaches is their support. It seems that Microsoft has shelved further development on ODBC. That is, it's in QFE mode. This means that Microsoft is no longer investing in enhancementsonly major bug fixes if any crop up.

TIP My students ask me if they need to use theADODB qualifier when coding their Dim statements. I tell them that this is optional, but ifthere is even a remote chance that their code might invoke the Data Access Objects (DAO) library, they had better include it to avoid name collisions. Ifyou do include the ADODB prefix, changes that other bright minds make later won't break your golden code. Instantiating ADO Components in Visual Basic Script I understand that technology often moves faster than our ability as developers, writers, and trainers to keep up with it.

Exe yourself. Here's a tip. exe /q /(:"Setup QN1" Although this is not a "quiet" install, it does the job and shows users what's going on (as if they really cared). IMHO It's clear now that this attempt to prevent "DLL Hell" as we know it did not go very far in curing this problem. NET Framework will not require use of DLLs-except those we grandfather into our designs. NET architecture calls for an "XCOPY''-style of installation. This permits one to install the same DLL any number of times in our applications and install several different versions of the DLLs on the target system-the application chooses and loads these at run time from a local directory.

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