When would you choose a DataSet or DataReader?
A critical choice when designing your application is whether to use a DataSet or a DataReader. If you need to retrieve many records rapidly, use a DataReader. The DataReader object is fast, returning a fire hose of read-only data from the server, one record at a time.
Which is faster DataSet or DataTable?
DataTables should be quicker as they are more lightweight. If you’re only pulling a single resultset, its your best choice between the two.
What is the difference between a DataSet and a DataReader?
Dataset is used to hold tables with 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.
Which is faster DataReader or DataAdapter?
Using a DataReader produces faster results than using a DataAdapter to return the same data. Because the DataAdapter actually uses a DataReader to retrieve data, this should not surprise us.
Is DataReader faster than DataTable?
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. Approaching twice as fast sometimes.
Why is DataReader useful?
The ADO.NET DataReader is used to retrieve read-only (cannot update data back to a datasource) and forward-only (cannot read backward/random) data from a database. Using of a DataReader increases application performance and reduces system overheads. This is due to one row at a time is stored in memory.
What is DataReader and DataAdapter?
DataAdapter is an intermediate layer/ middleware which acts a bridge between the DataSet and a Database whereas DataReader provides forward-only, read-only access to data using a server-side cursor (simply put it is ued to read the data).
Is there anything faster than Sqldatareader in net?
Runtime. Caching namespace. If you’re doing purely data operations (as your question suggests), you could rewrite your code which is using the data to be T-SQL and run natively on SQL. This has the potential to be much faster, as you will be working with the data directly and not shifting it about.
When should I use DataReader and DataAdapter?
The OP didn’t ask for alternatives to DataReader and DataAdapter. I disagree: he asked “what scenario would it been better to use DataAdapter + Datatable combo than using DataReader” and I answered (or at least contributed to the discussion) by giving a description of the way I have designed things.
Which is better DataReader or DataTable?
What is the use of DataReader?
ExecuteReader to retrieve rows from a data source. 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 you’re retrieving large amounts of data because the data is not cached in memory.
What is DataReader in VB net?
DataReader is a readonly, forward only and connected recordset from the database. In DataReader, database connection is opened until the object is closed unlike DataSet. Using DataReader we can able to access one row at a time so there it is not required storing it in memory.
What is difference between DataSource and dataset?
The datasource is where you are pulling your data from – eg SQL Server, Oracle etc The dataset is the actual data you pull ie your query or tables Hope this helps,
What are the advantages of using dataset?
Memory based. Client datasets reside completely in memory,making them useful for temporary tables.
Is there any difference between dataset and database?
Data are observations or measurements (unprocessed or processed) represented as text,numbers,or multimedia.
What is an example of a data set?
Let us discuss all these data sets with examples. Numerical Data Sets. A set of all numerical data. It deals only with numbers. Some of the examples are; Weight and height of a person; The count of RBC in a medical report; Number of pages present in a book; Bivariate Data Sets. A data set that has two variables is called a Bivariate data set.