The provider is not bound to a driver, but to a database back end. Data Explorer also takes advantage of metadata providers to provide metadata support for other database drivers. The metadata providers are detached from the driver, so that one metadata provider can be used for multiple driver implementations as long as the database backend is the same. The separate metadata readers and writers that were in the DbxReadOnlyMetaData and DbxMetaData packages no longer exist. Full source code to all metadata providers is included in the product.Įach provider is composed of a metadata reader and metadata writer implementation contained inside the dbExpress driver packages. New metadata providers for 9 different database backends are written completely in Delphi. However, there are some new methods, properties, events, constants, and enums. Most applications are not affected by changes to the dbExpress VCL.

The dbExpress VCL component's implementation has changed with minimal change to the API.

2.1 Metadata read and write capabilities.

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