Is DataReader faster than DataSet?
A great plus about DataSet is that it can be filled using multiple data sources. The DataSet represents a complete set of data among the tables that include related tables, constraints, and relationships. However, this greater functionality comes with performance overhead; therefore, DataSet is slower than DataReader.
Which is better DataReader or DataTable?
We ended up writing some benchmarks to test the speed differences. It was generally agreed that a DataReader is faster, but we wanted to see how much faster. The results surprised us. The DataTable was consistently faster than the DataReader.
Which method returns an DataReader object?
ExecuteReader method
As you’ve seen in the previous examples, you call the ExecuteReader method of the Command object, which returns an instance of the DataReader.
What does a DataReader class do?
A DataReader parses a Tabular Data Stream from Microsoft SQL Server, and other methods of retrieving data from other sources. A DataReader is usually accompanied by a Command object that contains the query, optionally any parameters, and the connection object to run the query on.
What is DataReader object in C#?
The DataReader provides an unbuffered stream of data that allows procedural logic to efficiently process results from a data source sequentially. The DataReader is a good choice when retrieving large amounts of data because the data is not cached in memory.
What is the difference between DataSet and DataReader in C#?
Dataset or DataReader? The DataSet class in ADO.Net operates in an entirely disconnected nature, while DataReader is a connection oriented service. DataSet is an in-memory representation of a collection of Database objects including related tables, constraints, and relationships among the tables.
What is DataReader and DataSet?
What is difference between DataReader and DataSet in C#?
Also DataSet provides you with rich features like saving data as XML and loading XML data. DataReader is designed to retrieve a read-only, forward-only stream of data from data sources. DataReader has a connection oriented nature, whenever you want fetch the data from database that you must have a connection.