' Run create_table.bas first, afterwards, you might want to run add_primary_key.bas
option explicit
sub add_column()
dim access as Access.Application
dim db as Dao.Database
dim mdb_file_name as string
mdb_file_name = "c:\\temp\\dao_test.mdb"
set access = new Access.Application
access.OpenCurrentDatabase(mdb_file_name)
set db = access.CurrentDb
dim table_def as dao.tableDef
dim table_field as dao.Field
set table_def = db.tableDefs("some_table")
set table_field = table_def.createField("fifthColumn", dbText, 20)
table_def.fields.append table_field
set table_field = nothing
set table_def = nothing
set access = nothing
end sub