View source for Data.SqlExpr.TCustomSQLDataSet.DataLink

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==Description==
{{#ifeq: {{PAGENAME}} | Data.SqlExpr.TCustomSQLDataSet.DataLink | |{{InheritsFrom|Data.SqlExpr.TCustomSQLDataSet.DataLink}}}}

<section begin=short />Identifies the datalink that manages communication between the SQL dataset and another, master dataset.<section end=short />

The protected [[Data.SqlExpr.TCustomSQLDataSet.DataLink|DataLink]] property is used internally when the SQL dataset acts as the detail dataset in a master/detail relationship that is not based on nested datasets. The datalink object manages communication between another (master) dataset and this SQL dataset. For example, it is the datalink that tells this SQL dataset to refresh its data when the active record of the master dataset changes.

Do not use [[Data.SqlExpr.TCustomSQLDataSet.DataLink|DataLink]] to establish the relationship between an SQL dataset and another (master) dataset from which it obtains parameter values. Instead, use the [[Data.SqlExpr.TCustomSQLDataSet.DataSource|DataSource]] property, or, if the dataset is [[Data.SqlExpr.TSQLTable|TSQLTable]], the [[Data.SqlExpr.TSQLTable.MasterSource|MasterSource]] property.

===See Also===

* [[Data.SqlExpr.TCustomSQLDataSet.DataSource|DataSource]]

* [[Data.SqlExpr.TSQLDataLink|TSQLDataLink]]

* [[Data.SqlExpr.TSQLTable.MasterSource|MasterSource]]


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