Thai names follow the Western European pattern of a given name followed by a family name. This differs from the family-name-first patterns of Cambodia, Vietnam, and East Asia. Thai names (given and family) are diverse and often long. The diversity of family names is due to the fact that Thai surnames are a recent introduction and are required to be unique to a family. Additionally, while given names are used for official purposes and record-keeping, most Thais are also given a nickname at birth which they use in their daily life, including at school and in the workplace. In many social situations, the nickname takes precedence over the real name.