The National Ethanol Vehicle Coalition, a non-profit advocacy group, maintains a comprehensive nationwide database of E85 fueling stations online at http://www.e85refueling.com.

The group is planning a nationwide database early next year to help people find the disposal and reuse options in their neighborhoods.

Municipalities exchange information through a closed network at the end of each day to a nationwide database, which can be consulted by officials online.

This nationwide database has detailed information on domestic violence shelters, other emergency shelters, legal support and assistance programs, and social service programs.

The groups are building nationwide databases of voters and have committed millions of dollars for continued contact with them before and on Election Day.

The government continues to track and analyze trafficking trends through a nationwide database.

The site, Mr. Hersh said, contains a nationwide database of hotels, motels, bed-and-breakfasts and campgrounds that will accept pets.

These are nationwide databases that banks and credit unions can use to deny customers a checking account.

But when the name was entered into the new nationwide database of criminal convictions this fall, Mr. Cook said that records were located in Tennessee.

The Criminal Justice Program also maintains a nationwide database of animal cruelty cases and current and model animal protection laws available to prosecutors, legislators and researchers.