![]() Pessimistic: Lock the table the entire time that the recordset is open.BatchOptimistic: All changes be submitted at one time.Optimistic: Does not lock the file until updates are actually applied.Dynamic: Use most of resources, and can see all changes made by other users.Keyset: Can see changes made by other users (except insertions).Unable to see changes made by other users. Static: Can navigate in both directions.Use the least amount of system resources. Forward Only: Can only move forward through the recordset (can only MoveNext).CursorLocation: server site, client site.Command TimeOut: Amount of time in seconds the ADO control will allow for commands to be executed on the server.Right Click and select ADODC Properties.Able to connect to data sources such as dBase, text files, and Excel spreadsheet. ![]() RecordSet Type Property: Table, Dynaset, Snapshot.RecordSource property: tables, queries, SQL statement.VB projects come with built-in Data Environments and Data Report Designer.Drag and Drop the Command object (Must make sure the DataSOurce and DataMember properties of the DataReport are set properly).ĭata Report Code Example ‘To preview report DataReport1.Show ‘To print DataReport.PrintReport.The DataMember and DataField properties of the text box are automatically set. Drag and Drop fields from the Data Environment to report detail section.An overview of the database objects you have in a project, such as Data Environments, connections, data links.MoveFirst, MoveLast, MoveNext, MovePreviousĭata Environment Code Example IF THEN END IF.Access command object’s Recordset object and Recordset object’s methods.Data Member: Command1 (Note: Data environment can support many command objects).Drag and drop fields from Command1 to form.Click Add Command to choose record source.Click Properties to set up database connection.They make data available to any forms and modules in your application. Data Environments are designed to be the basis of design-time and run-time data access.Project/More ActiveX Designer/Data Environment.Supports: Access, dBase, FoxPro, Paradox, ODBC, Text files.File DSN: Can be copied and used by other computers with the same driver installed.System DSN: Any one using the machine can use. ![]()
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