SQL Table and Log creation

sql_create.sql

CREATE TABLE [dbo].[Users]
(

[uuid] [uniqueidentifier]  not null,
[firstname] varchar(256)  null,
[lastname] varchar(256)  null,
[age] int  null,
[social] varchar(256) null,
[gender] varchar(10) null,
CONSTRAINT Users_Primary PRIMARY KEY (uuid)
) 
GO

ALTER TABLE [dbo].[Users] ADD  DEFAULT (newid()) FOR [uuid]
GO

CREATE TABLE [dbo].[Users_log]
(

[uuid] [uniqueidentifier]  null,
[firstname] varchar(256)  null,
[lastname] varchar(256)  null,
[age] int  null,
[social] varchar(256) null,
[gender] varchar(10) null,
[action] varchar(10) null,
[changeuser] varchar(100) null,
[modifiedOn] datetime null,
[VerCol] rowversion

) 
GO