//mschema to define a Project type
type Project
{
    ProjectID : Integer64 = AutoNumber();
    ProjectName : Text#25;
    ConectionStringSource : Text;
    ConectionStringDestination : Text;
    DateCompared: DateTime;
    Comment: Text?;
    ProjectOwner: ApplicationUser;
} where identity ProjectID;

//this will define a SQL foreign key relationship
ProjectCollection : Project* where item.ProjectOwner in ApplicationUserCollection;

set xact_abort on;
go

begin transaction;
go

set ansi_nulls on;
go

create schema [Test1];
go

create table [Test1].[ApplicationUserCollection]
(
 [UserID] bigint not null identity,
 [FirstName] nvarchar(max) null,
 [LastName] nvarchar(25) not null,
 [Password] nvarchar(10) not null,
 constraint [PK_ApplicationUserCollection] primary key clustered ([UserID])
);
go

create table [Test1].[ProjectCollection]
(
 [ProjectID] bigint not null identity,
 [Comment] nvarchar(max) null,
 [ConectionStringDestination] nvarchar(max) not null,
 [ConectionStringSource] nvarchar(max) not null,
 [DateCompared] datetime2 not null,
 [ProjectName] nvarchar(25) not null,
 [ProjectOwner] bigint not null,
 constraint [PK_ProjectCollection] primary key clustered ([ProjectID]),
 constraint [FK_ProjectCollection_ProjectOwner_Test1_ApplicationUserCollection] foreign key ([ProjectOwner]) references [Test1].[ApplicationUserCollection] ([UserID])
);
go

insert into [Test1].[ApplicationUserCollection] ([FirstName], [LastName], [Password])
values (N'user1', N'name1', N'1@34')
;

insert into [Test1].[ApplicationUserCollection] ([FirstName], [LastName], [Password])
values (N'user2', N'name2', N'123@4')
;

insert into [Test1].[ApplicationUserCollection] ([FirstName], [LastName], [Password])
values (N'user3', N'name3', N'56#2')
;

insert into [Test1].[ApplicationUserCollection] ([FirstName], [LastName], [Password])
values (N'user4', N'name4', N'789@5')
;
go

commit transaction;

Go

   ProjectCollection
   {
       Project1{
           ProjectName = "My Project 1",
           ConectionStringSource = "Data Source=.;Initial Catalog=MyDB1;Integrated Security=True;",
           ConectionStringDestination = "Data Source=.;Initial Catalog=MyDB2;Integrated Security=True;",
           Comment="Project Comment",
           DateCompared=2009-01-01T00:00:00,
           ProjectOwner=ApplicationUserCollection.User1 //direct ref to User1 (FK)
       },
       Project2{
           ProjectName = "My Project 2",
           ConectionStringSource = "Data Source=.;Initial Catalog=MyDB1;Integrated Security=True;",
           ConectionStringDestination = "Data Source=.;Initial Catalog=MyDB2;Integrated Security=True;",
           Comment="Project Comment",
           DateCompared=2009-01-01T00:00:00,
           ProjectOwner=ApplicationUserCollection.User2 //direct ref to User2 (FK)
       }

   }