Strongly Typed Object SQL

... you'll learn to do the same with the strongly typed SQLData and CustomDatum interfaces. Chapter 16. Strongly Typed Object SQL Strongly typed object SQL refers to the use of client-side custom ... database object, an Array object for collections, and a Ref object to hold a database reference. With strongly typed object SQL, you'll use a custom Java cla...

Ngày tải lên: 29/09/2013, 09:20

... Weakly Typed Object SQL Weakly typed object SQL refers to the use of structures, arrays, and references to insert, update, delete, and select SQL objects. A structure refers to a structured SQL ... weakly typed objects with the Struct object. 15.2 Structs You use a java .sql. Struct object to insert object data into the database, update it, or select object data from...

Ngày tải lên: 29/09/2013, 09:20

... StringBuilder( ); // Create the DataAdapter. SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Categories", ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]); if (annotatedRadioButton.Checked) ... sample uses one XSD file: CategoriesDS_AnnotatedNull.xsd The schema used to generate the strongly typed DataSet. The schema is annotated so the null D...

Ngày tải lên: 14/12/2013, 18:16

... section, you'll see how to modify data using a strongly typed object of the MyDataSet class. Note One of the features of a strongly typed DataSet object allows you to read a column value using ... Modifying Data Using a Strongly Typed DataSet In Chapter 10 , you saw how to create and use a strongly typed DataSet class named MyDataSet. You can use objects of thi...

Ngày tải lên: 24/12/2013, 01:17

... Annotation Description typedChildren Name of the method that returns objects from a child data relation. typedName Name of the object. typedParent Name of the method that returns an object from a parent ... classes and properties in strongly typed DataSet classes. The sample uses one XSD file: CategoriesDS_AnnotatedName.xsd The schema used to generate the strongly typed Data...

Ngày tải lên: 24/12/2013, 05:15

... to create a strongly typed DataSet object to access the Customers table. Using a Strongly Typed DataSet Class Once you have your strongly typed MyDataSet class, you can create an object of that ... System.Data.SqlClient.SqlDataAdapter mySqlDataAdapter = new System.Data.SqlClient.SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; MyDataSet myDataSet = new...

Ngày tải lên: 21/01/2014, 07:20

... values as objects of the System .Object class: while (productsSqlDataReader.Read()) { object productID = productsSqlDataReader[productIDColPos]; object productName = productsSqlDataReader[productNameColPos]; ... productsSqlDataReader[productNameColPos]; object unitPrice = productsSqlDataReader[unitPriceColPos]; object unitsInStock = productsSqlDataReader[unitsInStoc...

Ngày tải lên: 21/01/2014, 07:20

... Strongly Typed DataSet Problem You want to create a strongly typed object wrapper around a DataSet. Solution Use one of the three techniques shown in the discussion to create a strongly typed ... TableNameRow object for which the event was raised. A strongly typed DataSet has some advantages over using an untyped DataSet: • The schema information is contained within...

Ngày tải lên: 21/01/2014, 11:20

... database involve object- relational SQL. Object- relational SQL is the application of SQL to Oracle database objects and forms the basis of the object portion of Oracle's object- relational ... CallableStatement Java objects with Oracle database objects. So let's start our journey into object- relational SQL with an overview of Oracle's object- relational technolo...

Ngày tải lên: 29/09/2013, 09:20

... of the SqlConnection object mySqlConnection.Open(); // display the properties of the SqlConnection object Console.WriteLine("mySqlConnection.ConnectionString = "+ mySqlConnection.ConnectionString); ... you've imported the System.Data.SqlClient namespace, you can create a new SqlConnection object using the following statement: SqlConnection mySqlConnection = ne...

Ngày tải lên: 07/11/2013, 10:15