20180913 - Clarification about Limitation

[Rekha]

Hi Solr Team,
I am new to SOLR. I need following clarification from you. 
                How many documents can be stored in one core?                   
Is there any limit for number of fields per document?                   How 
many Core’s can be created in on SOLR?                        Is there 
any other limitation is there based on the Disk storage size? I mean some of 
the database has the 10 GM limit, I have asked like that.                 Can 
we use SOLR as a database?  
Thanks,Rekha Karthick