Pega test topics - data modeling
Download as DOC, PDF1 like1,360 views
The document outlines key concepts related to data modeling for the Pega platform, covering data classes, properties, and various modes of data properties. It explains how application data is managed via clipboard pages and introduces the structure of data models, including initial property values and their associations. The significance of rules and inheritance in data classes is emphasized, alongside the importance of referencing using dot notation.
Pega test topics - data modeling
- 1. Pega Test Topics Data Modeling % of Exam: 7% ■ Data Classes • Data classes hold properties to support applications and can be for both Framework and Implementation classes • Application data is stored and manipulated via pages on the clipboard at runtime • Must directly or indirectly inherit from Data- ■ Properties • A property is an instance of the Rule-Obj-Property rule. It defines and labels a value that can be associated with a class. • Properties may be scalar or aggregate (single or multiple values) • Properties can have 1 of 11 modes: Value Modes 1. Single Value – Simply a single value 2. Value List – An ordered index of strings (array) 3. Value Group - Contains one or multiple strings, unordered, each identified by a unique text index value. Page Modes 4. Page ( ) – Property consists of a page 5. Page List ( ) – An ordered list of pages 6. Page Group ( ) – An unordered list of pages Java Object Modes 7. Java Object - Contains a reference to an instance of a Java object 8. Java List - Array of Java objects 9. Java Group - Unordered set of Java objects. Java Property Modes - Properties of these modes support the Java pages feature, which enables Process Commander applications to interact with external Java objects as though they were pages and properties on the clipboard. 10. Java Property 11. Java Property List Embedded Pages is a clipboard page that has the value of a property of mode Page. • Any page on the clipboard that is not a top-level page is an embedded page. Dot Notation is used to reference pages and properties
- 2. Data Model • A data model consists of data objects, data object elements, and their associations Model • Defines initial values for properties of a specific class • Invoked when a page is created • Named pyDefault by convention • If Subclass models have the same name (pyDefault) they will call superclass models