Close, but not quite correct. Assuming that the question is asked in reference to oil burner primary controls the answers are:
The terms are really constant ignition, intermittent ignition and interrupted ignition.
A constant ignition would be a constantly burning source of ignition such as a gas pilot flame. These are only found in commercial and industrial sized equipment, and not very often these days.
An intermittent ignition would be an ignition source for the main burner that was energized prior to the main fuel valve and remained energized during the entire time the main burner was being fired. In a residential application this would almost always mean the spark ignition transformer would be energized during the entire time the burner was iin operation.
An interrupted ignition would be an ignition source for the main burner that is stopped some specific time after the main burner fuel valve is opened. In residential service this means the ignition transformer is de-energized after the main flame is established.
A typical residential system would sequence as this:
1. Call for heat from thermostat.
2. Blower motor and ignition transformer are energized.
3. Blower and fuel pump (common shaft) come up to speed while transformer sparks via electrode gap.
4. Atomized oil is ignited by spark.
5. Flame sensor "sees" flame and via electronic circuitry shuts off power to ignition transformer stopping spark.
6. Burner continues to operate as long as thermostat is calling for heat.
7. Thermostat is satisfied, burner motor is de-energized, blower and oil pump slow down and oil pump "clean cut-off valve (internal to oil pump) closes stopping flame.