Mainframe Interview Questions

Mainframe Introduction In this Mainframe tutorial you will learn about mainframes and its concepts and some of the early mainframes describing the evolution and history of mainframes in detail. History and Evolution of Mainframes, Mainframe Channel, Direct Access Storage Device - DASD and Logical Partition...

Mainframe Features In this Mainframe tutorial, you will learn about features of Mainframe - Processing power, memory capacity, performance, computing, multiple operating system, time sharing, reliability, serviceability, availability, clustering technology and other features available in Mainframe. Large...

http://www.hbx.us/shells/To provide free and ‘unrestricted’ use of a FreeBSD/UNIX mainframe shell so that those people who can not afford to rent use of or run their own may gain the benefits of its use and learn how to use one of the greatest operating systems on earth and to understand the concepts...

SOA Integration Since SOA integration is the least invasive approach to legacy application modernization, this technique allows legacy components to be used as part of an SOA infrastructure very quickly and with little risk. Further, it is often the first step in the larger modernization process. In...

Platform Migration This are a encompasses a few different approaches. They all share a common theme of low risk, predictable migration to an open system platform with a high level of automation to manage this process. With platform migrations, the focus is moving from one technology base to another...

Here we look at strategies to modernization a set of data stores that are stored across disparate and heterogeneous sources. We often have problems with accessing and managing legacy data. There is an increase in cost to run batch jobs, which generate reports 24 to 48 hours after they are needed. Further,...

Business Value What Really Matters? It is very important to take a holistic view on what the benefits are for legacy modernization. There are, of course, cost savings in hard dollars that are associated with a large­scale modernization. After all, TCO/ROI is often what drives most organizations....

Industry outlook for computer programmers : According to the U.S. Department of Labor, the outlook for employment for Computer Programmers is expected to grow with other industries through 2012. Positions for Applications Programmers and Systems Programmers will be abundant in consulting businesses,...

A lot has been written on legacy modernization in the past few years. Most of the books, analyst reports, and white papers discuss at a high level why one should modernize and theorize, and the different approaches to, and possible outcomes of modernization. Instead of going into modernization theory,...

Deep Dive on Approaches There are five primary options for modernization, and all are worthy of deep exploration. In the next section, we will review each of these options at a high level. However, this book is a deep technical dive on two approaches for Legacy Modernization, namely SOA enablement...

What is a Hierarchical Model? The term Hierarchical Model covers a broad concept spectrum. It often refers to a lot of set ups like Multi-Level models where there are various levels of information or data all related be some larger form. The Hierarchical model is similar to the Network model;...

Active Data Warehouse is repository of any form of captured transactional data so that they can be used for the purpose of finding trends and patterns to be used for future decision making. According to Bill Inmon, a prominent data warehousing practitioner, data warehouse defined in terms of subject-oriented,...

Often, data warehouses are being managed by more than just one computer server. This is because the high volume of data cannot be handled by one computer alone. In the past, mainframes were used for processes involving big bulks of data. Mainframes were giant computers housed in big rooms to be used...

Distributed Data Set consist of data set from a single data subject or data occurrence group which is distributed. A data set is a collection of data from the any data source. This collection is usually presented in a table format. The column in the table contains particular variables while each of the...

Enterprise System Connection Architecture (ESCON) is an IBM mainframe channel architecture which is commonly used to attach storage devices. In particular, it is a serial optical interface connecting IBM mainframe computers and peripheral devices like tape drives and other storage devices. This architecture...

An Executive Information System (EIS) as a management information system is generally designed to be emphasized with graphical display and very easy to use and appealing interfaces as this is assumed to be used for supporting and facilitating the information and decision making needs of senior executives.      EIS...

Web Servers? What are Web Servers? Web Server Communication Web servers are one of the endpoints in communication through the World Wide Web. Client Server Features Client Server Features Web Server Introduction Web servers are the machines or programs from which requests are made and fulfilled...

Programming Concepts Debugging - A Important Aspect in Programming Debugging - A Important Aspect in Programming In this tutorial you will learn about Debugging - A Important Aspect in Programming, Detection or Finding of the Bug, What the bug or fault is, Where it... Design Documents in Programming...