How to update and insert database records without writing code?

Update Database Records
http://allaboutsap.blogspot.com/2008/01/how-to-update-database-records-without.html

http://www.saptechnical.com/Tips/Basis/Transport/TableEntries.htm

Creating Entries in Table when Table Maintainence is not allowed.
First set break points to both the includes LSD41F01 for case df-ddxx-mainflag and for include LSETBU03 set break point to if dd02l-mainflag = 'N'.

Now go to SE11 tcode and give the table name and press display now debug will start and take you to the case mentioned below.

CASE df-ddxx-mainflag.
during debug change the value to 'X'
and press F8 Now it will take you to the next include

LSETBU03
if dd02l-mainflag = 'N'.
Here set the value to 'X'.Now it will take you to the creation of table entries and we can give the required entries.