Installing Drupal

Hi,
I need to install drupal on existing DB, In general Drupal creates new DB while installing,
Can anyone suggest me how can I install Drupal-7.x on existing database which has been created by Drupal-8.2.2 Plz...
Or,
any suggestion on what can be done.

I am installing Drupal to create a single instance of a new website on my local Windows 7 PC under XAMPP. One of the Drupal instalation screens, I think the third, asks for the site name. Which of the following three formats can, or should, be used:

One Woman Training (three words title case with spaces)
onewomantraining (all one word and all lower case)
OneWomanTraining (one word with Camel case)

After the site is setup, can this site name (whatever it is) be changed?

Thanks,
Richard

I have a few questions about my PHP configuration settings. I am working on a local, single site installation on my Windows 7 PC under XAMPP.

Hi

I'm traying to install drupal buy command line with :
drush site-install standard --account-name=username --account-pass=password --db-url=mysql://root:root@localhost/drupal_test

I get this message :

I'm trying to install drupal 8 per the instructions on this website:

https://www.drupal.org/node/307956

I then get to the part on the above link where it says

"5. Browse to http://localhost/drupal/install.php and follow the instructions it gives. For the database information, use what you set up in step 3. See Getting started Run-script for more details."

I am attempting to move a drupal 8 install to a new server. I copied all of the files and the database to the new server and adjusted the settings folder with the new database information.

The site and all of its pages, display correctly, but whenever I attempt to login in, I just get the "The website encountered an unexpected error. Please try again later." white screen.

Can anyone offer a suggestion as to what is causing the error? Perhaps something about the new servers apache configuration?

Or, without using drush, how can I best track my issue down?