In SQL queries you can make changes in the database and get the result you want.

It will be Managed by ACL API.

Manage User control and what changes they have done, as well as when to get notifications, & who will be notified, that should be managed by ACL tools in aem. You can use database triggers also. Please check and learn.   Yours, Makrand +91 9930102832

Please check time zone with date and year. If it exactly what you have given them it show other wise there is a confusion in year? Verify 

Through admin console you get ldap and group create with email start sync and integration.

Through ACL application you can create login and share, manage user.

Create new database, download or export any dataset into CSV format. And upload to new database 

Create Images folder in assets folder and with photo Shop edit and share or upload   

You have to edit the template, of page 3, and change properties and components as required. Another option is to replace the index with page 3.   Yours Makrand

Where Data Collection is? You have link data with the site.