Shell script Database Help

[Martin Wiedmeyer]

I'm writing a database in shell script. I've encountered a number of
problems, including how to change or delete particular records and searching 
for records by multiple criteria. The data is in single lines with tabs
sepatating fields. I have tried a number of approaches to no avail.

Can anyone drop me some code chunks or suggest some good books to help?

Thanks.

			Marty

BTW,
How come grep $FOO $BASE|grep $BAR|grep $BAR1 doesn't return a 1 if it fails, it
gives a 0 on success......

BASE=datafile
FOO, BAR & BAR1=user supplied variables
-- 

	Marty Wiedmeyer

	martin at lakesys.lakesys.COM