Drupal 8 : How to use UPDATE query with Syntax and Example

UPDATE is the Data Manipulation Language(DML) query in Database management system. Using the object of core Drupal class we can perform database queries in Drupal 8. Update is the data modifying query used to change data in Database. The update() is a function of Drupal 8 core class used for update records. Below is syntax and example of how to use INSERT query in Drupal 8.
Before Update Record in Table be like:
EMPLOYEE_ID | EMPLOYEE_NAME | EMPLOYEE_AGE |
---|---|---|
CE 001 | Mohan | 20 |
CE 002 | Dinesh | 17 |
CE 003 | Kumar | 25 |
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