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ADO.NET Review

ADO.NET Review. The connection string does not contain the following Username Password SQL Provider Datasource. To return only one value from a query, use the ___________ method. ExecuteNonQuery ExecuteReader ExcecuteItem ExecuteScalar. The DataAdapter object

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ADO.NET Review

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  1. ADO.NET Review

  2. The connection string does not contain the following • Username • Password • SQL • Provider • Datasource

  3. To return only one value from a query, use the ___________ method. • ExecuteNonQuery • ExecuteReader • ExcecuteItem • ExecuteScalar

  4. The DataAdapter object • Is used to store Table results • Contains the Select, Update, Delete and Insert SQL • Is the translator for the client SQL • Is used when accessing multiple tables

  5. To use the DataTable.Load method, you need a • DataReader object • DataAdapter • DataExecutive • DataDATAtool

  6. To get data using a DataAdapter use this method • Get • Fill • Retrieve • Execute

  7. The DataRow.RowState tells us • If the row is unchanged • If the row is inserted • If the row is deleted • If the row is proposed • All of the above

  8. To get rows of a table that have changed, use • .Changes • .Update • .GetChanges • .HasChanges

  9. To check if there are any rows of a table that have changed, use • .Changes • .Update • .GetChanges • .HasChanges

  10. To access a specific field in a table, code the following • table.current.col • table.rows.col.item • table.rows(x).col(“FieldName”) • table.rows(x).item(“FieldName”)

  11. DataSets hold • Sets • DataAdapters • DataSet Objects • DataTables

  12. The CurrencyManager objects is derived from the____________ class. • BindingContext • ContextManager • BindingManager • DataContext

  13. A command object requires • SQL and a Connection Object • SQL • A Connection • A DataReader

  14. The unique identifier for a record in a table is • The Primary Index • The Foreign Key • The Primary Key • The Foreign Index

  15. The connection may be used by • a DataAdapter • a Command Object • Neither • Both

  16. When using a datareader, to get the contents of the second column of a datatable (of type string) use... • rdr.GetString(2) • rdr.GetValue(2,”String”) • rdr.GetString(1) • rdr.Read(1)

  17. Datatables are made up of • DataSets • DataRows and DataColumns • DataAdapters • Hopes and Dreams

  18. To bind a Combox to a DataTable, set the following... • DataSource, DisplayMember & ValueMember • DataSource • DisplayMember • ValueMember

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