Research on database scale estimate method

The database scale estimate is the software cost estimate foundation.This paper introduces the concept of database scale,makes use of methods,such as writing description,form and chart type that has an- alyzed the table type,the table structure,the table tuples to the influence of database scale.It has designed the database scale estimation mathematical model,has carried on the detailed explanation to each parameter in model,and points out the estimation method in the software life cycle back and forth stage.