We will work this out from the very basic question,
What is an ATG Repository??
A repository is a data access layer that defines a generic representation of a data store. It simplifies the storage and retrieval of data. The manipulations of data are done through the Repository API. Application developers access data only using the interfaces such as Repository and RepositoryItem. Developers can create, modify, query and remove repository items. A repository item is more or less like a Java bean. The ATG platform  includes a set of models for repositories.
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Some very basic stuffs in ATG, go ahead and read if you are looking for simple things, veteran ATG developers please stay away as you wont find it resourceful. Here in this article you will not find any codes but some basic interview questions.

The article focuses on the dsp tags, like previous post on this category here also our prime focus is dsp tags. In this specific article the author is trying to explain the usage of bean variable inside a jsp page. The code snippets include dsp getvalueof tag, dsp import bean, jstl tag c:out.Also it has some inputs to the usage of scriplets. The concepts is explained with the help of a sample code which might not actually work if you just copy paste but will surely help you understand the usage.

Catalog is a very important terminology when we talk about electronic commerce. This article will focus on the ATG’s standard product catalog and various terms related to the catalog. The article will describe the terms like – Categories, Products, SKUs etc. Categories are the central portion of the catalog which provides it with a structure, the navigational hierarchy comes only when there is a category. To be simple the categories make the heart of a catalog. An eg: will explain it further. Consider a store which sells different type of …

Dynamically generating HTML from a java object is a very common requirement for most applications. The droplet tag will help us in this by embedding the ATG servlet beans. The output of the ATG servlet beans is included in the HTML page. In this article our prime focus will be on a simple  ATG Out of the  Box servlet bean.
DSP:DROPLET tag: helps you invoke a servlet bean from a JSP page. The programming logic will be encapsulated in a java class(bean) which is used in the jsp.
ForEach Droplet: (“atg.droplet.ForEach” is …