Egads, drawing boxes and arrows by hand. Mind-numbing. May I suggest you instead create the tables and relations with SQL and then use a tool that diagrams your schema automatically.

In Object Explorer, expand the Database Diagrams folder. Double-click the name of the database diagram you want to open. -or- Right-click the name of the database diagram you want to open, and then ...

Make sure you are connected to the database whose table you want to copy. Open the source and target database diagrams and within the source diagram, select the table that you want to copy to the ...

SQL Servers allow the import or export of database diagrams to another database. All the information related to a database is stored in the dtproperties table. Therefore, to import or export a ...