Create table syntax TSQL - sql

Question

I have a problem in understanding the Create Table syntax as shown in the MSDN.
I guess that [] means that sth is optional | - a different way - so
CREATE TABLE
[ database_name . [ schema_name ] . | schema_name . ] table_name
means that you can actually use:
1.CREATE table table_name
2.CREATE table database_name.schema_name.table_name
4.Create table database_name.table_name
3.Create table schema_name.table_name
but what about {} or ()
CREATE TABLE
[ database_name . [ schema_name ] . | schema_name . ] table_name
[ AS FileTable ]
( { <column_definition>
| <computed_column_definition>
| <column_set_definition>
| [ <table_constraint> ]
| [ <table_index> ]
[ ,...n ] }
[ PERIOD FOR SYSTEM_TIME ( system_start_time_column_name
, system_end_time_column_name ) ]
)
[ ON { partition_scheme_name ( partition_column_name )
| filegroup
| "default" } ]
[ { TEXTIMAGE_ON { filegroup | "default" } ]
[ FILESTREAM_ON { partition_scheme_name
| filegroup
| "default" } ]
[ WITH ( <table_option> [ ,...n ] ) ]
[ ; ]
?

Answer 1

First of all you should check Transact-SQL Syntax Conventions:
| (vertical bar) Separates syntax items enclosed in brackets or braces.
You can use only one of the items.
[ ] (brackets) Optional syntax items. Do not type the brackets.
{ } (braces) Required syntax items. Do not type the braces.
Now, as for creating table you could use:
CREATE TABLE table_name
CREATE TABLE database_name..table_name
CREATE TABLE database_name.schema_name.table_name
CREATE TABLE schema_name.table_name
So your Create table database_name.table_name is incorrect. You have to use the second example. When you pass .. the table will be created inside default schema (most likely dbo).
As for second question how to read MSDN documentation.
Probably the best way is visual way: