A consistent database base is one in which all data integrity constraints are satisfied.
Answer:
c. Norms.
Explanation:
When Elena noticed her friend getting uncomfortable when she kisses him on the cheeks as a form of greeting she was violating his norms.
Norms are something that is standard or typical.
In USA there they not used to kiss on the cheeks to greet their friends there would be some other norm of greeting someone.
Answer:
The Internet has changed business, education, government, healthcare, and even the ways in which we interact with our loved ones—it has become one of the key drivers of social evolution. The changes in social communication are of particular significance.