Sprinkling water or immersing a believer in water symbolizes the forgiveness of sins--"cleansing". Usually this is accompanied by vows taken by the parents or the believer to faithfully practice the Christian religion.
Not every church have a second part to a baptism, but in the The Church of Jesus Christ of Latter Day Saints a person is confirmed a member of the church.
Baptism is practised in all the Christian churches. Whether it is infant baptism or adult baptism, Baptism is the washing of one's sins and the sealing of one's position as a child and heir of...