These principles can be extended or adjusted and applied to any data access situation. Those are general topics that do not relate specifically to data access so they should be learned elsewhere. All SQL statements are added via the Data Set designer and all you really have to do is create Table Adapters and call their methods. Additional Info: in the first scenario, im going to create a new data, and because this is a Time keeping System, First Im just going to get the Time IN and leave the Time OUT Column blank.. OLEDB.12.0; Data Source='C:\Users\Richard Colbert\Documents\Visual Studio 2008\Projects\Windows Application1\Windows Application1\shenandoah.accdb'") Dim adapter As New Ole Db. The Execute Scalar method returns the value from the first column of the first row of the query's result set: Note that Data Table. NET 1.x Retrieving multiple records for display and editing, then saving the changes. Fill method populates a Data Table with the contents of the result set of a query. Update method saves the changes in a Data Table in accordance with the SQL statements contained in the Delete Command, Insert Command and Update Command properties: Saving changes directly to one or more records in the database. Execute Non Query method will execute any SQL statement and not return a result set. All three return an Integer that contains the number of records that were either retrieved (Fill) or saved (Update, Execute Non Query).
Careful developers will not make any assumptions about whether or not foreign keys are enabled by default but will instead enable or disable them as necessary.) The application can also use a PRAGMA foreign_keys statement to determine if foreign keys are currently enabled.
Note If your application uses binding redirection, the binding redirection file must be updated to Pervasive. NET Framework, the following also occurs: The generic Provider instance (Pervasive. Sql Client) always points to the latest Provider assembly.
The Provider assemblies copied to the PSQL\bin directory are not pre-compiled at install time.
NET Entity Framework data provider supports two versions of the Microsoft ADO. All versions listed apply to both 32- and 64-bit versions of . NET Framework and earlier versions of the PSQL data provider is compatible with PSQL data provider 4.2. NET are provided through two different installations.
NET, then code written for earlier versions of the . NET Framework 2.0 or later is not installed by default. NET Framework 2.0 or later is not installed before installing PSQL, the PSQL providers are not written to the Global Assembly Cache (GAC) during PSQL installation, even though the provider assemblies are installed to the PSQL installation location. NET Provider being written to the GAC, it requires the following steps to function correctly: The files required for the PSQL Data Provider for ADO.