Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Retrieve and manipulate objects according to ORM framework
   • Instantiate single object in domain model and persist in data store according to ORM framework
   • Instantiate collection of objects in domain model and persist in data store according to ORM framework
   • Retrieve objects from data store
   • Update object and persist changes back to data store using ORM framework
   • Delete data in data store
   • Detach data and reattach data
   • Implement eager loading of related domain
   • Implement lazy loading of related domain objects
2. Manage transactions, concurrency and errors
   • Handle transaction commits and rollbacks effectively according to ORM framework and business needs
   • Handle data persistence and concurrency effectively according to ORM framework and business needs
   • Implement and confirm error-handling
   • Test and confirm transaction success according to business needs

Performance Evidence

The candidate must demonstrate the ability to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including evidence of the ability to:

use ORM framework to handle at least two different transactions

use ORM framework to manage data persistence to create, update, read and delete operation at least once

use ORM framework to handle concurrency when working with data persistence

confirm and use commands affecting at least two entities to the data source.

---

Knowledge Evidence

The candidate must be able to demonstrate knowledge to complete the tasks outlined in the elements, performance criteria and foundation skills of this unit, including knowledge of:

functions, features and uses of a database and selected data store

language used in object-oriented (OO) programming

different ORM framework methodologies, including:

database first methodology

object first methodology

functions and features of an ORM framework

testing techniques used for ORM framework

functions and features of transactions, commits and rollbacks

lazy and eager loading or persistent data objects

function and use of concurrency

testing processes for transaction success.

---