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Ans. Optimizing Resource utilization. When you open a file using any programming language , that is actually a request to operating system to access the file. When such a request is made , resources are allocated by the OS. When you gracefully close those files, those resources are set free.
In Java if you don’t close the streams and files, Garbage collection identifies the open files which have lost the reference and hence will close them.
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Ans. Maven provides a facility to have a structure of inheritance relationship between modules / projects through parent tag in POM file. When we try building the parent project , all its child modules are built first in the order specified in the parent POM file.
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Ans. Spring is a lightweight framework which gives in-build DI(Dependency injection) and IOC(Inversion of control) features. Where DI is used for injecting one bean into the another bean like Inheritance in Java and IOC is a controller which will control the flow of the bean like bean creation and so on. We will use Bean Factory and Application Context for configuring.
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Ans. It is not necessary to enter data in the CMDREG table, but an entry should be made in the struts-config.xml. The controller command can be registered in the CMDREG table by xml and SQL query.
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Ans. The catalog subsystem or Catalog Management provides online catalog navigation, partitioning, categorization, and associations. In addition, the catalog subsystem includes support for personalized interest lists and custom catalog display pages. The catalog subsystem contains all logic and data relevant to an online catalog, including catalog groups (or categories), catalog entries, and any associations or relationships among them.
Tables used for Catalog subsystem
1. CATENTRY
2. CATENTREL
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Ans. The Marketing subsystem is a component of the WebSphere Commerce Server, and provides numerous marketing concepts to your site, designed to increase brand awareness, and to attract and retain customers. Components of the marketing subsystem provide functionality to create marketing campaigns, including customer segments and advertising; and e-mail activities.
Various components are -
1. Promotions
2. Auctions
3. eSpots
4. e Mail Campaigns
5. Hubs and Extended sites for affiliates
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Ans. A smart data bean uses a lazy fetch method to retrieve its own data. This type of data bean can provide better performance in situations where not all data from the access bean is required, since it retrieves data only as required.
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Ans. Part of the order that needs to be shipped to a particular Address. There could be an Order where different portions needs to be delivered to different addresses. Each portion in such case is a suborder.
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Ans. ETL is Extract , Transform and Load. As the name suggest , it is the process of Data extraction , fabrication and then transfer to Database. Data Migration is one case of ETL.
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Ans. Attribute dictionary is a set of common attributes that can be reused by multiple products.
The attribute dictionary provides a central place to manage shared attributes, with the following features:
The ability to standardize attributes.
The ability to easily compare attributes shared by products and SKUs.
The ability to quickly change attributes in one place to affect all catalog entries.
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Ans. Asset stores are collections of sharable resources (business artifacts, business processes and storefront assets) that can be leveraged in other stores.
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Ans. By specifying XSiteScriptingProtection within wc-server.xml. Prohibited characters and attributes are specified within XSiteScriptingProtection to protect the application from any XSS attach.
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Ans. Dynacache in WCS is the object cache. Instead of creating objects again and again , the store objects are rendered on the basis of matched rules. Caching rules are stored in a configuration file called cachespec.xml.
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Ans. Both are creational design patterns but singleton facilitates in creation and reuse of single object whereas Factory deals with creation of multiple objects.
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