TClientDataSet = class(TCustomClientDataSet)
class PASCALIMPLEMENTATION TClientDataSet : public TCustomClientDataSet
TClientDataSet implements a database-independent dataset.
TClientDataSet represents an in-memory dataset. A client dataset can be used as:
- A fully functional, stand-alone, file-based dataset for single-tiered database applications. When used in this manner, the client dataset represents the data stored in a dedicated file on the user's hard disk.
- A local in-memory buffer of the records from another dataset. The other (source) dataset can reside in the same form or data module as the client dataset (for example, when the client dataset provides navigation and editing support for the data from a unidirectional dataset). The source dataset can also reside on a separate system when the client dataset supports the client portion of a multitiered database application.
When a client dataset represents the data from another dataset, it communicates with that dataset through a dataset provider. The client dataset communicates with this provider through the IAppServer interface. When the provider is in the same form or data module as the client dataset, the IAppServer interface is implemented by a hidden object that is created for you. When used in a client application as part of a multitiered application, the client dataset passes all calls to the provider through a remote data module's IAppServer interface.
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