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Chapter 15: Working with ADO
Overview
Chapter 14, "Client/Server with dbExpress," Borland has also replaced the BDE with a newer technology called dbExpress. ADO shares greater similarities with the BDE than with the lightweight dbExpress technology. BDE and ADO support navigation and manipulation of datasets, transaction processing, and cached updates (called batch updates in ADO), so the concepts and issues involved in using ADO are similar to those of the BDE.
In this chapter we will look at ADO. We will also discuss dbGo—a set of Delphi components initially called ADOExpress, but renamed in Delphi 6 because Microsoft objects to the use of the term ADO in third-party product names. It is possible to use ADO in Delphi without using dbGo. By importing the ADO type library, you can gain direct access to the ADO interfaces; this is how Delphi programmers used ADO before the release of Delphi 5. However, this path bypasses Delphi's database infrastructure and ensures that you are unable to make use of other Delphi technologies such as the data-aware controls or DataSnap. This chapter uses dbGo for all of its examples, not only because it is readily available and supported but also because it is a very viable solution. Regardless of your final choice, you will find the information here useful.
| Note | Alternatively, you can turn to Delphi's active third-party market for other ADO component suites such as Adonis, AdoSolutio, Diamond ADO, and Kamiak. |
