Where all SAP ABAP programs get stored!!

ALL ABAP program are stored in table D010S (Till 4.6C). However, you will not able to see this table via SE11/12/16. But you can
read/update this table using native sql.
Example:

exec sql .
select * into :i_tab from D010S where PROG =
'Y000001'
endexec.

NOTE: This table is very IMPORTANT and Sensitive. So please do not play with this table. This may cause adverse affect on your program/system.