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5. ‘Active Data Dictionary

The database management system automatically maintains the

The active data dictionary is very consistent with the structure and

tionary is integrated data dictionary

The databace management systems automatically manage this

I doesn't require any separate database

ms (ROBMS)
à this type of dictionary as it an be easily derived from their
System catalog

doesnt provide a good User Interface

Passive Data Dictionary

The passive data dictionary is modified whenever the structure of
the database is changed.

he proc
databace

‘The users are responsible for manually managing ths dictionary:

We requires a separate databace for working with thie dictionary

IA the passive data dictionary requires a separate database, soe
allows the programmers to remain independent of using a
particular ROBMS.

I provides you a fendiy User Interface.

Is managed manual by the users