Some Important Difference in Salesforce Terminologies

Salesforce.com & Force.com

• The basic difference between the both is the way they serve means Salesforce.com is based on SaaS Model while Force.com is based on PaaS model.
• Salesforce provide the Standard Object whereas Force.com provide the platform where we can customize the application

Queue & Group
Both are set of users but the Group is used for sharing the record while Queue is used to reduced the workload of User and used in assignment process.
Queue:

• Queue is used for reducing the workload.
• Queue can be the owner of a record.
• Queue can be created for Custom objects and for Case, Lead and Knowledge Article Version.

Group:

• Group is used for sharing purpose. We can share the folder to particular group.
• Public Group is kind of team or group of related users; this will help you to share the data.
•  Public group created can be used across any objects.

Custom Setting & Custom Object
Custom Settings:

• Custom settings are SOQL inexpensive
• We can’t write triggers on custom settings
• Fields on which we can create custom settings are restricted like picklists, lookups and formula fields can’t be created in custom settings
• No Page layouts, record types, validation rules and workflow rules can be used on custom settings

Custom Objects:

• Custom Objects are SOQL Expensive
• We can have triggers on custom objects
• No restrictions on creation of fields
• Page layouts, record types, validation rules and workflow rules Can be used on Custom objects

Note: Use Custom Setting when you want to use some set of data in the apex logic as we can retrieve records by using method. Also Custom Setting record is cache able so it is also faster way.

Workflows & Approval process:

The key difference between workflows and approval process are as below

• Workflow rules consist of single step and a single action whereas approval process has multiple steps and different actions.
• Workflow rules trigger automatically and the rules when triggered are not visible to the user. Approval process on the other hand, contains multiple step s each requiring a specific “I Approve or Reject” user action by the specified approvers.

Task & Events

Event: An event is a calendar event scheduled for a specific day and time. Examples of events are:

• Meetings
• Scheduled Conference Calls

Task: A task is an activity not scheduled for an exact day and time. You can specify a due date for a task or there may not be a particular time or date that the tasks or activities need to be completed by.Examples of tasks are:

• A list of phone calls you need to make.
• An email that needs to be sent.