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What are the information_schema tables I see when viewing my database?
Metadata is data about the data, such as the name of a database or table, the data type of a column, or access privileges. Other terms that sometimes are used for this information are data dictionary and system catalog.
INFORMATION_SCHEMA is the information database, the place that stores information about all the other databases that the MySQL server maintains. Inside INFORMATION_SCHEMA there are several read-only tables. They are actually views, not base tables, so there are no files associated with them.
These are read only so they can't be edited or removed. Just ignore this tables and continue your work.
Tips:For more information on this, please visit http://dev.mysql.com/doc/refman/5.0/en/information-schema.htm