measuring the database

Folks,

Where I work the software developers (usually using C++) often use SLOC to measure their output for the purpose of trying to predict the amount of development effort required for future projects. This, however, has not been
applied to our database objects, like stored procedures or tables, that are part of
the development effort.

Does anyone have any experience with measuring database objects for predicting
future effort? If so, what are you measuring and how successful is this.

Thanks in advance.

-- 
Roger