What is the special set of characters that indicates the start and end of an HTML element and that element's type?

What is added to the < meta > tag to describe the encoding type?

Facial expressions and gestures are examples of messages.

George heard about the benefits of a data warehouse. he wants to try implementing one for his organization. however, he is afraid that transferring data to the data warehouse will affect transaction time. which element ensures that transactions are not affected when moving data to a warehouse? when data is transferred to a data warehouse, the a area frees the source system to continue transaction processing.