What is the difference between Wide and Nonwide tables in SQL Server?

SQL SERVER INTERVIEW QUESTIONS :

What is the difference between Wide and Non-wide tables in SQL Server?

1) Wide table can contain 30,000 columns, Non-wide table(basic table) can contain only 1024 columns.
2) Wide Tables are considered to be denormalized tables, Non-wide tables are considered to be Normalized tables.
3) Wide tables are used in OLAP systems, Narrow tables are used in OLTP system.
4) Wide table is new feature in SQL Server 2008. To over come the problem of having only 1024 columns in Narrow tables.
5) Wide tables don't work with transnational or merge replication, but Non-wide can work.