GetSchema()

This method returns schema information for the data source of the OracleConnection.

Declaration

// C#
public override DataTable GetSchema();

Return Value

A DataTable object.

Exceptions

InvalidOperationException – The connection is closed.

Remarks

This method returns a DataTable object that contains a row for each metadata collection available from the database.

The method is equivalent to specifying the String value "MetaDataCollections" when using the GetSchema(String) method.

Example

// C#
 
using System;
using System.Data;
using System.Data.Common;
using Oracle.DataAccess.Client;
 
class GetSchemaSample
{
  static void Main(string[] args)
  {
    string constr = "User Id=scott; Password=tiger; Data Source=oracle;";
    string ProviderName = "Oracle.DataAccess.Client";
 
    DbProviderFactory factory = DbProviderFactories.GetFactory(ProviderName);
 
    using (DbConnection conn = factory.CreateConnection())
    {
      try
      {
        conn.ConnectionString = constr;
        conn.Open();
 
        //Get all the schema collections and write to an XML file. 
        //The XML file name is Oracle.DataAccess.Client_Schema.xml
        DataTable dtSchema = conn.GetSchema();
        dtSchema.WriteXml(ProviderName + "_Schema.xml");
      }
      catch (Exception ex)
      {
        Console.WriteLine(ex.Message);
        Console.WriteLine(ex.StackTrace);
      }
    }
  }
}