__________ is/are online service(s) that facilitate communication and interaction among people who want to share information.
A. Email
B. Social media
C. Crowdsourcing
D. Geolocation
Answer: B
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A. acceptable use policy B. password policy C. system-specific policy D. physical device policy
________ networks use cell towers to transmit voice and data over large distances
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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.