[saloni gupta]

Unmanaged packages are typically used to distribute open-source projects or application templates to provide developers with the basic building blocks for an application , whereas Managed packages are typically used by salesforce.com partners to distribute and sell applications to customers.

Main thing which differentiate Managed and Unmanaged is , Managed version can be upgraded but the Unmanaged version you can customize however you like, but it can't be upgraded (if a new version were released, you would need to uninstall and reinstall, which can be difficult once you have data). That is the reason , unmanaged package is only used to share the meta data.

[saloni gupta]

Queueable Interface

This interface enables you to add jobs to the queue and monitor them which is an enhanced way of running your asynchronous Apex code compared to using future methods.

Future Callouts

When using synchronous processing, all method calls are made from the same thread that is executing the Apex code, and no additional processing can occur until the process is complete. You can use future methods for any operation you’d like to run asynchronously in its own thread. This provides the benefits of not blocking the user from performing other operations and providing higher governor and execution limits for the process. Everyone’s a winner with asynchronous processing.

[saloni gupta]

thanks sudhir, Can you give any example for this scenario ?

[saloni gupta]

hi shubham,

Yes, Undelete is count as DML Operation.

you can refer following link for DML operation-

https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_dml_section.htm

[saloni gupta]

trigger InsertContactOnAccount on Account (after insert) {

List<Contact> con = new List<Contact>();
List<id> ide = new List<id>();
for(Account acc:Trigger.new)
ide.add(acc.id);
integer i,j;
for(i=0,j=0;j<10&&i<ide.size();j++){
contact c = new contact(lastName = 'test'+j, accountId= Trigger.new.get(i).id);
con.add(c);
if(j==9){
i++;
j=0;
}
}

insert con;
}

[saloni gupta]

Custom objects are objects that you create to store information that’s specific to your company or industry. For House, you want to build a custom Property object that stores information about the homes.

[saloni gupta]

This code is showing the same exception again and again.

[saloni gupta]

hi Sudhir,

I want to display the owner name by custom controller.

 

[saloni gupta]

yes, i want to display the account owner name on the vf page