which function should i invoke to create a table and insert tuples?

[sunpeng <bluevaley@xxxxxxxxx>]

hi,when i do experiment on postgresql 8.4,i need to create a table and insert some tuples,which function should i invoke?
for example,i want to create a table with "create table test (uid int,catcode int)" and insert tuples with "insert into test values(1,1)".
thanks millions!

peng