12. What is a “Self Relationship”?
Self Relationship is a lookup relationship to the same object. Suppose let’s take an object “Merchandise”. Here we can create relationship in between the Account to Account (same object) object. That is called “Self Relationship”.
13. What are the main things need to consider in the “Master-Detail Relationship”?
Record level access is determined by the parent, Mandatory on child for reference of parent, cascade delete (if you delete the parent, it can cascade delete the child).
14. What is difference between trigger and workflow?
Workflow
Workflow is automated process that fired an action based on Evaluation criteria and rule criteria.
We can access a workflow across the object.
We cannot perform DML operation on workflow
We cannot query from database
Trigger
Trigger is a piece of code that executes before or after a record is inserted or updated.
We can access the trigger across the object and related to that objects
We can use 20 DML operations in one trigger.
We can use 20 SOQL’s from data base in one trigger.
15. What is Wrapper class?
A Wrapper class is a class whose instances are collection of other objects.
It is used to display different objects on a Visual Force page in same table.
16. What is Difference between SOQL and SOSL?
SOQL(Salesforce Object Query Language)
Using SOQL we can Search only on one object at a time.
We can query on all fields of any datatype
We can use SOQL in Triggers and classes.
We can perform DML operation on query results.
SOSL(Salesforce object Search Language)
Using SOSL we can search on many objects at a time.
We can query only on fields whose data type is text,phone and Email.
We can use in calsses but not in Triggers.
We cannot perform DML operation on search result
17. What is difference insert() and database .insert() ?
Using insert method we can insert the records but if any error occurs in any record system will throw an error insertion fail and none of the records are inserted.
If we want to execute partially success of bulk insert operation we will use database .insert.
18. What is Static Resources?
Using Static Resources we can upload images, zip files, jar files, java script and CSS files that can be referred in a visual force page.
The maximum size of Static Resources for an organization is 250mB.
19. How to call java script using Static Resource in Visual Force page?
Add java script file in Static Resource setup -> develop -> Static Resources -> click on ‘New’ -> Name: filename and add file from local desktop and save.
We can use that file as follows in Visual Force page
<apex: includescript values=” {! $Resource.fileName}”/>
20. What is sharing rule?
If we want to give the access to other users we use sharing rules.
21. How many ways we can share a record?
Role Hierarchy:
If we add a user to a role, the user is above in the role hierarchy will have read access.
Setup -> manage users -> roles -> setup roles -> click on ‘add role’ -> provide name and save.
OWD:
Defines the base line setting for the organization.
Defines the level of access to the user can see the other user’s record
OWD can be Private, Public Read Only, Public Read and Write.
Setup -> Security Controls -> sharing settings -> Click on ‘Edit’
Manual Sharing:
Manual Sharing is sharing a single record to single user or group of users.
We can see this button detail page of the record and this is visible only when OWD setting is private.
Criteria Based Sharing rules:
If we want to share records based on condition like share records to group of users
Whose criteria are country is India.
Setup -> security controls -> sharing settings -> select the object and provide name and
Conditions and save
Apex sharing:
Share object is available for every object(For Account object share object is AccountShare ). If we want to share the records using apex we have to create a record to the share object.
22. What are the actions in workflow?
1. Email Alert
2. Task
3. Field Update
4. Outbound Message
23. How many ways we can made field is required?
1. While creation of field
2. Validation rules
3. Page Layout level
24. What is difference between Role and Profile?
Role is Record level access and it is not mandatory for all users.
Profile is object level and field level access and it is mandatory for all users.
25. What is the maximum size of the PDF generated on visualforce attribute renderAs?
15MB
26. How many controllers can be used in a visual force page?
Salesforce come under SAAS so, we can use one controller and as many extension controllers.
27. What is difference between Action support and Action function?
Action function: Invoke the controller method from java script using AJAX and we can use action function from different places on visual force page.
Action support: Invoke the controller method using AJAX when even occurs on page like onMouseOver, onClick, ect… and we can use action support for particular single apex component.
28. How many ways we can call the Apex class?
1. Visual force page
2. Web Service
3. Triggers
4. Email services
29. How to create Master Details relationship between existing records?
Directly we can’t create Master Detail relationship between existing records, first we have to create Lookup relationship and provide valid lookup fields and it shouldn’t null.
30. What is permission set?
Permission sets extend user’s functional access without changing user’s profile.
Ex: A user has only read access through profile on custom object, administrator want to give access Edit and create operations to him without changing the profile. Administrator creates the permission set having edit and creates operation on custom object and assign to that user.
31. What is manual sharing?
Manual sharing is to share a record to a particular user manually.
Go to detail page of record and click on manual sharing button and assign that record to other user with Read or Read/Write access.
Manual Sharing button enables only when OWD is private to that object.
32. How we can change the Grant access using role hierarchy for standard objects?
Not possible.
33. What is the use of “Transfer Record” in profile?
If user have only Read access on particular record but he wants to change the owner name of that record, then in profile level Transfer Record enables he can able to change the owner.
34. What is Field dependency?
According to the field selection on one field filter the pick list values on other field.
35. Is check box performs like controlling field?
Yes possible. Controlling field should be Check box or pick list.
36. How many field dependencies we can use in Visual Force page?
Maximum we can use 10 field dependencies in VF page.
37. What is Roll-up summary?
Roll-up displays the count of child records and calculate the sum, min and max of fields of the child records.
38. How to create Roll-up summary field on lookup relation?
Not possible. Roll-up summary is enabled for only Master –Detail relationship.
39. What are the Record Types?
Record Types are restrict the pick list values and assign to the different page layouts for different Record Types.
40. What is Audit Trail?
Audit Trail provides the information or track all the recent setup changes that an administrator done to the organization.
This can store the last 6 months data.
41. What are the Report Types?
4 Types of report in Salesforce
Tabular Reports: We can only displays the grand total in the table form.
Summary Reports: It is a detail form of report in which the grouping done based on Columns.
Matrix Reports: It is a detail form of report in which the grouping done based on both Rows and Columns.
Joined Reports: We can join the two or more reports in the single report displayed in the form of blocks.
42. What is Dashboard?
Dashboard is a pictorial representation of report. We can add up to 20 reports in single dashboard.
43. What is the default timeout period while calling webservice from Apex.
10Sec
44. We have a “Time Based Workflow” and there is Action scheduled to be executed. If we Deactivate the workflow, Scheduled actions will be removed from queue or not?
Action will be performed even if we are deactivated the workflow.
45. How to delete “Time based workflow” if there is already an action scheduled?
We can’t delete the “Time based workflow” if any pending actions in the queue.
46. How to update the record using After Trigger context?
Not possible. You will get error like “Record is Read only”.
47. What is the difference between “Export” and “Export All” in Data Loader in Salesforce?
Export is export all the data from Salesforce.com excluding the recycle bin’s data.
Export All is export all the data from Salesforce including the recycle bin’s data.
48. What is the use of “ALL ROWS” in SOQL?
ALL ROWS is used for retrieving the records from recycle bin.
Ex: SELECT Id from Campaign ALL ROWS
-> “ALL ROWS” is not work in developer console.
49. What is the use of “FOR UPDATE” in SOQL?
FOR UPDATE is used to lock the records.
Ex: Campaign cam = [SELECT id FROM Campaign LIMIT 1 FOR UPDATE];
50. What is the use of “savepoint” in apex?
This is will use for to roll back the changes.
51. How to call Apex class using java script?
Check the below code.
Apex Class:
global class ClassName{
webService static String methodName(String camName) {
Campaign cam = new Campaign(name = camName);
return cam.name;
}
}
Java Script:
var Campaign = sforce.sObject(“Campaign”);
var String = sforce.apex.exceute(“ClassName”,”methodName”,{name=”ABC”});
52. How to run trigger in asynchronously?
If you use @FUTURE annotation trigger run asynchronously.
53. We are not providing some of fields in .csv file which are required in page layout level. What happens if we try to insert records into Salesforce through data loader?
All records are inserted in Salesforce successfully.
54. We are not providing some of fields in .csv file which are required in Filed level. What happens if we try to insert records into Salesforce through data loader?
Except those records remaining records will be inserted in to Salesforce.
