A parliamentary system is a form of democratic governance where the executive branch is accountable to the legislature. Key characteristics include: 1. The prime minister is elected and nominates other ministers which are approved by the head of state. Experienced members are preferred. 2. All ministers must work as a team and agree on issues. Disagreement can lead to resignation or expulsion from the cabinet. 3. Powers are shared between the legislative and executive branches, which check each other's authority. The government remains in power as long as it has the legislature's confidence.