How to check the amount/number of issued on the database DDL operations

Hello

Can someone please clear some doubts.

1. How can we check the number of DDL operations on the database

2. how we check the amount of growth in the size of the database.

3. How can we check the growth of a single table.

Concerning
Amith

Select startup_time "Startup."
MySQL 'Transactions. "
/Decode (value) sum (Sum (trunc(sysdate-STARTUP_TIME)), 0.1, Sum (trunc(sysdate-STARTUP_TIME))) "Avg per day."
/Decode (value) sum (Sum (trunc(sysdate-STARTUP_TIME)), 0.1, Sum (trunc(sysdate-STARTUP_TIME))) / 24 ' Avg / hour. "
/Decode (value) sum (Sum (trunc(sysdate-STARTUP_TIME)), 0.1, Sum (trunc(sysdate-STARTUP_TIME))) / 1440 "Avg / min.
v $ sysstat, instance $v
WHERE name in (a "user is committed," restores user)
Startup_time group;

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