Correct Answer: B

Create and Install the Versioned Database Schema

In order to store asset version metadata, the asset management server's database schema requires additional columns for the primary tables used by your application's repositories, and additional tables to store versioning information.

Create the Versioned Schema

To modify the asset management server's database schema to store versioning data, follow these steps:

1.

Copy each database DDL file that you plan to modify.

2.

Add the following columns to every table that represents a primary table for an item descriptor:

asset_version INT NOT NULL workspace_id VARCHAR(40) NOT NULL branch_id VARCHAR(40) NOT NULL is_head NUMERIC(1) NOT NULL version_deleted NUMERIC(1) NOT NULL version_editable NUMERIC(1) NOT NULL pred_version INT NULL checkin_date TIMESTAMP NULL

3.

Add the following column to every table that represents an auxiliary or multi table in an item descriptor: asset_version INT NOT NULL

Correct Answer: D

Price List Calculators

An ItemPriceCalculator class maintains all the functionality common to all the pricing schemes.

Three sub-calculators correspond to the three different pricing schemes. The three different schemes are calculating the list price of an item, calculating the price of an item using bulk pricing, and calculating the price of an item using tiered

pricing.

*

ItemListPriceCalculator: Calls the getPrice method from the PriceListManager to retrieve the list price of the CommerceItem.

*

ItemBulkPriceCalculator

*

ItemTierPriceCalculator Note:

*

The ItemListPriceCalculator is a calculator which determines the list price of an item and sets the itemPriceInfo to be that amount. The pricing scheme for that item is list pricing.

Correct Answer: B

A customer's profile has an activePromotions property that contains a list of PromotionStatus RepositoryItems.

Correct Answer: D

ATG Consumer Commerce comes with an XML definition file that contains the information for the standard product catalog. A reference to this XML file is found in the /atg/commerce/catalog/ProductCatalog component. The location of this XML file is /atg/commerce/catalog/productCatalog.xml.

Note: ATG Commerce stores its product catalog data in a SQL database and accesses that data via the SQL Repository Adapter. In order for the SQL Repository Adapter to be able to access your product catalog information, all of the information regarding the definition of your item types must be defined in an XML repository template definition file.

Correct Answer: B

Example:

property name="gender" data-type="enumerated"> In the above property example, with useCodeForValue

set to false, then if you get the gender property, the string male or female is returned. With useCodeForValue set to true, then the integer code 0 or 1 would be returned instead.

Note: Enumerated Properties

Properties of repository items can have a data type of enumerated. Enumerated properties are string properties constrained to a predefined list of valid values and stored as integer codes in the database.

Correct Answer: B

Recording Sites within the Site Repository Definition All registered sites have a site ID and are recorded in the siteRepository definition. The Site repository, which runs on all server instances, stores site configurations, site categories and site groups that are created with Site Administration. The Site repository stores the following item descriptors:

siteConfiguration An item descriptor that contains the site configuration properties. Versioned siteConfigurations are deployed from the publishing server to the production server.

siteGroup An item descriptor that contains sharing group properties. Versioned siteGroups are deployed from the publishing server to the production server.

siteTemplate An item descriptor for a site category. Site categories are non-versioned instances that are stored in the siteRepository definition on the publishing server. Site categories do not get deployed.

Correct Answer: BCD

Nucleus: Organizing JavaBean Components

Nucleus is Oracle ATG Web Commerce's component model for building applications from JavaBeans.

Nucleus lets you assemble applications through simple configuration files that specify what components are used by the application, what parameters are used to initialize those components, and how those components hook up to each other.

Nucleus by itself provides no application-specific functions. The JavaBean components implement all of an application's functionality. Nucleus is the mechanism that gives those components a place to live, and a way for those components to

find each other.

Note: Event Sources

Your class can be a source for JavaBeans events by following the patterns outlined in the JavaBeans specifications (see Events and Event Listeners in the Core ATG Services chapter). If your class fires events, Nucleus properties files can

be used to configure the listeners for those events.

D: However, these classes should implement certain interfaces that give components access to a number of Nucleus capabilities, such as automatic creation, configuration, and notifications.

The easiest way to implement these interfaces is to subclass atg.nucleus.GenericService, which implements all interfaces described in the following sections. However, your class might already extend some other class, thereby preventing you from extending GenericService. In this case, your class must implement the necessary interfaces.

Note: Your class does not need to implement all interfaces that GenericService implements, only the ones with the functionality required.

E: Any Java object with an empty constructor can act as a component in Nucleus.

Note: Java has several design patterns Singleton Pattern being the most commonly used. Java Singleton pattern belongs to the family of design patterns, that govern the instantiation process. This design pattern proposes that at any time there can only be one instance of a singleton (object) created by the JVM.

The class's default constructor is made private, which prevents the direct instantiation of the object by others (Other Classes). A static modifier is applied to the instance method that returns the object as it then makes this method a class level method that can be accessed without creating an object.

Correct Answer: C

Because it can be resource intensive to collect a user's list of promotions, or pricing models, the session-scoped UserPricingModels component (class atg.commerce.pricing.PricingModelHolder) stores them in a session cache. When a session starts for a user, UserPricingModels queries each pricing engine for the customer's promotions. PricingModelHolder is schedulable, and can also be configured to periodically update the promotions cache.

These promotions include both the promotions in the user's activePromotions profile property and the list of global promotions.

References: ATG Commerce Programming Guide, Promotion Repository Item Properties

Correct Answer: B

public class Qualifier extends GenericService A Helper class for discount calculators. Calculators call their helper method in this class to determine to which items they should apply their discount. As a side effect, the Qualifier also keeps track of which items acted as qualifiers for the input promotion, if applicable, and marks their priceInfos as appropriate.

Correct Answer: D

first is a page parameter. We use getPageParameter to access it. last is a bean parameter. We use getParameter to access it.

Note: dsp:param

Identifies a servlet bean input parameter; or defines a page parameter.

param-value />

attributes

name (servlet bean)

Identifies an input parameter that is defined for the current servlet bean. For information on input parameters for specific servlet beans, see Appendix B, ATG Servlet Beans.

name (page parameter)

Defines a page parameter that is accessible to the current JSP and embedded child pages.