QUESTION: 177

Which of the following about Dynamic Apex is incorrect?

You can retrieve the sObject type from an Id by calling .getSObjectType()
getDescribe() can get you a variety of info on a particular object/field
Schema.getGlobalDescribe() gives you a map of all sObject
In dynamic SOQL, you can use bind variables and bind variable fields

Answer(s): D

Explanation:

While you can use simple bind variables in dynamic SOQL, you cannot use bind variable fields (e.g. :myVariable.field1_c)
Use escapeSingleQuotes to prevent SOQL injection

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QUESTION: 178

Which of the following exceptions cannot be caught and will force an error? (Choose three.)

LimitException
AssertException
SObjectExceptions
DMLException
License exceptions
ListException

Answer(s): A,B,E

Explanation:

SObjectException occurs when accessing a field not queried, or you try to change a field during the wrong dml statement (i.e. an edit-only field being set on insert)
Custom exceptions must extend the "Exception" class

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