What is meta data in database management?

Answer 1

meta data can be define as the data about data....

data is the known facts which can be recorded and altered...and the info. about the data is called meta data...

example :-

Suppose in a student table student name,age,sex,class,subject,stream all are the data of the student table and the data about these data(name,age,sex, etc...) like what type of data whether it is a integer or string or char and what is the range like age should be with in o-20 like the all are called Meta Data.......