2002-05-03 Daniel Morgan <danmorg@sc.rr.com>

2002-05-03  Daniel Morgan <danmorg@sc.rr.com>

	* Test/TestExecuteScalar.cs: added test for
	method ExecuteScalar in class SqlCommand.

	* System.Data/DataColumnCollection.cs - it should
	inherit properties from base InternalDataCollectionBase
	and use them instead of overriding them, such as, List.

	* System.Data/DataColumn.cs
	* System.Data/DataTable.cs: tweaks to retrieve
	meta data from the database

	* System.Data.SqlClient/PostgresLibrary.cs -
	added method OidToType to convert PostgreSQL oid type
	to System.Type.  Renamed method OidTypeToSystem
	to ConvertPgTypeToSystem for converting the data value
	from a PostgreSQL type to a .NET System type.

	* System.Data.SqlClient/SqlCommand.cs: implemented
	method ExecuteReader which returns a SqlDataReader
	for a light forward only read only result set.
	It works on types int4 ==> Int32 and
	varchar ==> String.  Other types
	will come later.

	* System.Data.SqlClient/SqlConnection.cs: added comment

	* System.Data.SqlClient/SqlDataReader.cs: implemented
	class.  It works, but still lots to do.

	* Test/ReadPostgresData.cs: stuff

	* Test/TestSqlDataReader.cs: updated test for SqlDataReader
	to display meta data and the data

svn path=/trunk/mcs/; revision=4247