What does external ID mean in Salesforce?
unique record identifiers
External ID in Salesforce is a custom field that has the “External ID” attribute checked meaning that it contains unique record identifiers from a system outside of Salesforce. An object can have at most 7 External IDs’ fields. The field type should be any one of auto-number, email, number, or text.
How do I find my external ID in Salesforce?
Create an external ID field
- In a browser, log in to Salesforce.com.
- Near the top of the screen, click your user name, and then click Setup.
- Under Build, click Customize, and then select the object you want to update—for example, Account.
- Click the Add a custom field to accounts link.
What’s the difference between insert DML and update DML?
The insert DML operation adds one or more sObjects, such as individual accounts or contacts, to your organization’s data. insert is analogous to the INSERT statement in SQL. The update DML operation modifies one or more existing sObject records, such as individual accounts or contacts, invoice statements, in your organization’s data.
What does the insert DML statement in SQL mean?
Insert DML Statement. The insert DML operation adds one or more sObjects, such as individual accounts or contacts, to your organization’s data. insert is analogous to the INSERT statement in SQL.
How is a MERGE statement used in DML?
The merge statement merges up to three records of the same sObject type into one of the records, deleting the others, and re-parenting any related records.This DML operation does not have a matching Database system method. Different ways to perform DML operations. By using Database Class. By using DML Statements. By using Database Class.
How are DML statements used in Salesforce database?
Each DML statement accepts either a single sObject or a list (or array) of sObjects. Operating on a list of sObjects is a more efficient way for processing records. All those statements, except a couple, are familiar database operations. The upsert and merge statements are particular to Salesforce and can be quite handy.