/// <summary>
/// Create foreign key constraint
/// </summary>
/// <param name="model">Relationship model</param>
/// <returns>Exception message if failed, NULL if not</returns>
public string AddRelationship(RelationshipModel model)
{
var ctx = new DatabaseContext(SessionProvider.Instance.ConnectionType);
try
{
ctx.AddRelationship(model);
return(null);
}
catch (Exception exception) when(exception is SqlException || exception is OracleException)
{
Output.WriteLine(OutputPanelListener.PrepareException(exception.Message));
return(exception.Message);
}
}