The document describes 5 database tables with their field names and data types: 1) The User table stores user registration information like ID, username, password, location. 2) The Support table tracks support requests with fields for description, file name and location. 3) The Search Log table logs search activities with fields for search ID, username, keywords, URLs and count. 4) The Primary Key table contains a primary ID, description, file name and location fields. 5) The Main DB table stores a file name and location.