Answer:
The name of the components of the given labelled circuit is:
The box like figure in the given image is the battery source from where the current drawn into the circuit.
A string connecting positive terminal of battery to the bulb is an electric wire through which current flows in the circuit.
A bubble like object in the circuit is a bulb which lights up when current moves through the circuit.
A component connected to the negative terminal of batter source is a switch.
Then open circuit is an open as the key of the switch is open.
I guess the correct answer is concurrency control
Cοncurrеncy cοntrοl is a databasе managеmеnt systеms (DBMS) cοncеpt that is usеd tο addrеss cοnflicts with thе simultanеοus accеssing οr altеring οf data that can οccur with a multi-usеr systеm.
In database systems, the DBMS enforces rules about which user can perform which action when. The rules are known as concurrency control.