how to obtain ER and data dictionary

Hello good morning

i need obtain ER and data dictionary using Heidisql, it posibble?

also 3384 fix bugs no apply what is the problem? today using heidsql 3383 versión, i donwloaded 3384 fix bug by are not apply

Please explain "... fix bug by are not apply".

And what is "ER and data dictionary"?

ER diagram Database(entity-relationship diagrams)

A data dictionary is an integral part of a database, which holds information about the database and the data that it stores, i.e., the meta-data

OK. No, that is not a feature of HeidiSQL.

try the various tables in the information_schema database for MySQL metadata.
AFAIK the mysql workbench tool can do ER for tables using Engine=InnoDB.