made clear that OleDb not yet supported

Author: rofr

docs/storage/sql-storage/index.md

@@ -69,7 +69,7 @@ Note the `{0}` placeholder. `String.Format` will be applied to the statements pa
 The ProviderName must be one the following supported providers. Otherwise a custom provider needs to be configured. See Custom Providers below.
 
 * `System.Data.SqlClient` - has been tested with Sql Server 2008 and above
-* `System.Data.OleDbClient` - tested with Sql Server
+* `System.Data.OleDb` - not yet tested so probably not operational.
 * `System.Data.SqlServerCe.4.0` - will use `MsSqlStatements` but has not been tested
 
 ##  Custom Providers

src/OrigoDB.Core/Storage/Sql/OleDbStatements.cs

@@ -2,6 +2,9 @@
 
 namespace OrigoDB.Core.Storage.Sql
 {
+    /// <summary>
+    /// Not yet tested! Please let us know if try it out
+    /// </summary>
     public class OleDbStatements : SqlStatements
     {
         public OleDbStatements()

src/OrigoDB.Core/Storage/Sql/SqlCommandStore.cs

@@ -27,7 +27,7 @@ static SqlCommandStore()
         {
             ProviderStatements["System.Data.SqlClient"] = new MsSqlStatements();
             ProviderStatements["System.Data.SqlServerCe.4.0"] = new MsSqlStatements();
-            ProviderStatements["System.Data.OleDbClient"] = new OleDbStatements();
+            ProviderStatements["System.Data.OleDb"] = new OleDbStatements();
         }