Esta es la tabla de país para una base de datos de SQL Server
/****** Script para crear la tabla con todos los paises ******/
CREATE TABLE [DIC_Pais](
[PK_ID] [int] NOT NULL,
[ISONUM] [int] NOT NULL CONSTRAINT [DF__DIC_Pais__ISONUM__38EE7070] DEFAULT (''),
[ISO2] [nvarchar](2) COLLATE Latin1_General_CI_AI NOT NULL CONSTRAINT [DF__DIC_Pais__ISO2__39E294A9] DEFAULT (''),
[ISO3] [nvarchar](3) COLLATE Latin1_General_CI_AI NOT NULL CONSTRAINT [DF__DIC_Pais__ISO3__3AD6B8E2] DEFAULT (''),
[NOMBRE] [nvarchar](80) COLLATE Latin1_General_CI_AI NOT NULL CONSTRAINT [DF__DIC_Pais__NOMBRE__3BCADD1B] DEFAULT (''), CONSTRAINT [PK_DIC_Pais]
PRIMARY KEY CLUSTERED
(
[PK_ID] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]