Life is simple

What is PDF? PDF is Portable Document Format. What is ODBC? It is Open Database Connectivity. What is buffer? a buffer is a region of a physical memory storage used to temporarily hold data while it is being moved from one place to another. Is buffer cause important problems? Buffer can cause a special case of violation of memory safety.

OMG iera... u can't even answer all those question. How about the other 40 question? question that involve different types of programming language, database script, theory and so on?