Process Builder

1. It is a tool provided by salesforce.

Q-  When we use a process builder?
A-  When we have to use the Automating business process without writing a single line of code.

Q-  When process builder invokes?
A-  it will invoke by
                              1. A record change ( The process will start when a record is created or edited  )
                               2. Platform event  (  platform event determines the event data that the Lightning platform can produce or consume )
                               3. It invokes by another process  ( The process will start when another process 'invokes' )

Process builder have some action
1. Create a new record
2. Submit for approval
3. Update relative record
4. Call apex class (only when it have @invokablemethod annotation )
5. Post to chatter
6. Email alert
7. Quick action
8. Call flow
9. Process

Q- Can a  process to evaluate a record multiple times in a single transaction?
A-  Recursion Enable the Check_box ( 5 times)

In process builder, you can perform any one action or combination of action or all action

Process Builder can update both parent record/child record (either Master or Lookup relation is there)
and it also updates relative records

Q- what we can not do with process Builder?
A- Yes we can not do something with process builder
     1.Deleting Records ( Alternative : Flow/Apex)
     2. Outbound Message ( Workflow / Apex )
     3. Cloning a record (Apex)
     4. Updating unrelated records ( flow,apex)

Deactivate any workflow or process having similar conditions,
Use proper naming convention in condition and action


NOTE :
1. Process builder can call batch apex
2. Only active auto launched flows can be launched by a process.
3. Processes can launch only active flows that don't contain screens.