Explain different zone involved in DNS Server?

DNS has two different Zones Forward Lookup Zone and Reverse Lookup Zone. Those two Zones are categorized into three zones and are as follows:

Primary zone: It contains the read and writable copy of the DNS Database.

Secondary Zone: It acts as a backup for the primary zone and contains the read only copy of the DNS database.

Stub zone: It is also read-only like a secondary zone; stub zone contains only SOA, copies of NS and A records for all name servers authoritative for the zone.