1. The document discusses how to implement semantic search in SQL Server 2012. It explains how to install semantic features, create catalogs and fulltext indexes for tables, and perform semantic searches on data.
2. To perform semantic searches, a catalog and fulltext index must be created for each table. Queries can then retrieve matching rows based on keywords.
3. Advanced semantic searches can apply business logic by using qualifier tables to filter and sort results based on conditions. Stored procedures allow combining semantic searches with qualifier tables to retrieve intelligent results.