Review 9 9 - Herson100/ProjectOne GitHub Wiki

System Classes and Asynchronous Apex

List the 3 major System namespace classes and their use:

• Schema- Gives information about any sOjbects and fields
• database- Dynamic SOQL, and DML operations with all-or-nothing turned off
• Limits- tool that track governor limits

How is dynamic apex achieved?

• designing the code to be able to take any input without breaking

List the asynchronous apex options and when they should be used:

• @future- allows the methods to callout and can't be chained
• Queuable Apex- can take complex parameters can be chained
• Schedulable Apex- run apex at specific point in time
• Batchable Apex- working with large amount of records 50 million items if needed