.net - .NET 中的 DataSet 和 DataTable 有什么区别？

Question

.NET 中的 DataSet 和 DataTable 有什么区别？

Answer 1

基本上，数据集是数据表的集合，可能包括表之间的关系。

来自 documentation for DataSet :

The DataSet, which is an in-memory cache of data retrieved from a data source, is a major component of the ADO.NET architecture. The DataSet consists of a collection of DataTable objects that you can relate to each other with DataRelation objects. You can also enforce data integrity in the DataSet by using the UniqueConstraint and ForeignKeyConstraint objects. For further details about working with DataSet objects, see DataSets, DataTables, and DataViews (ADO.NET).

所以DataSet 本身不包含数据——它总是在DataTables 中。 DataSet 基本上添加了元数据。