A file channel is ____, meaning you can search for a specific file location and operations can start at any specified position.

A spam filter is a type of utility software that captures unsolicited e-mail messages before they reach your Inbox.

Answer the following statement true (T) or false (F)

Consider an Account class and a TransactionActivity class in a banking system.

a. Posit ODMG ODL class de?nitions for them. The Account class must include a relationship to the set of objects in the TransactionActivity class corresponding to the deposit and withdraw transactions executed against that account. b. Give an example of a database instance satisfying that description. c. Write an OQL query against that database that will return the account numbers of all accounts for which there was at least one withdrawal of more than $10,000.