Look. You need to stop your watch at 00:00. And then you'll see that its least count is 0.01 second and then you should add your clocks' response time to make results more accurate.
A <em>"DATA FLOW DIAGRAM"</em> is a modeling tool used in structured systems analysis and design (SSAD) analysis model that helps break down a complex process into simpler, more manageable, and more understandable subprocesses
Each individual data items of record is called field (letter A).
The client may communicate with Proxy server to use a protocol to proxy the communication between the client and the DBMS. Proxy servers lets you hide your real Ip address and replaces it with a new IP obtained from proxy server sites.