Software testing involves the quality check and review of the product being tested and providing that information to the concerned stakeholders. Test techniques comprise the process of executing a program or application with the purpose of finding software bugs. In today´s fast moving world, it is a challenge for any company to continuously maintain and improve the quality and efficiency of software systems development. In many software projects, testing is neglected because of time or cost constraints. This leads to a lack of product quality, followed by customer dissatisfaction and ultimately to increased overall quality costs. This is where Automation Testing comes in.
Automated software testing is a process in which software tools execute pre-scripted tests on a software application before it is released into production. It increases the effectiveness, efficiency and coverage of the software testing. Manual software testing is performed by a programmer sitting in front of a computer and going through all the application screens, using the different usage and input combinations, comparing the results to the expected behavior and recording their observations. Manual tests are repeated often during development cycles for source code changes and other situations, making it a cumbersome process for the programmer. Automation testing eases this process by employing automation methods which considerably reduce the complication and man hours spent in going through the entire code multiple times. It has become critical for any software development project and is used by most organizations these days, instead of manual testing.
If you want to create robust, browser-based regression automation suites and tests, and wish to scale and distribute scripts across many environments, then Selenium WebDriver, a collection of language specific bindings to drive a browser, is the tool for you. If you want to create quick bug reproduction scripts and create scripts to aid in automation-aided exploratory testing, you can opt for Selenium IDE, a Firefox add-on that will do simple record-and-playback of interactions with the browser. The biggest advantage is that since Selenium is an open source tool, there are no Licensing costs associated with it and it can be customized as per user. Disadvantage would be we cannot be assured of any add-ins which would be required if Selenium fails to recognize objects. Also Support provided for Selenuim would be very less in such case.
The look, feel and performance of a web application needs to be tested across many web browsers to deliver flawless user experience and Selenium delivers amazingly well when it comes to this. Learn Automation Testing with Selenium and see your career soar as a Software Tester. Learn now!
Data. Be it Science, Business, Economics or Finance, it’s all about Data. In a time when data equals valuable information that can make or break, its sorting, storing and integration has become one of the most important practices. Informatica tools for Data Integration aim to do just that. Its components, focused on Data Integration and ETL processes, form the basis for establishing and maintaining enterprise wide data warehouses.
Data Warehouses are central repositories which store data and information from multiple and diverse sources. It is a system used for reporting and data analysis which incorporates data stores and conceptual, logical, and physical models to support business goals and end-user information needs. A data warehouse lays the foundation for a successful BI program.
The ETL product of Informatica is the Informatica Power Center which consists of the client tools, repository and server. The PowerCenter server and repository server make up the ETL layer, which completes the ETL processing. Informatica PowerCenter is a widely used extraction, transformation and loading (ETL) tool used in building enterprise data warehouses. The components within Informatica PowerCenter aid in extracting data from its source, transforming it as per business requirements and loading it into a target data warehouse. The PowerCenter server executes tasks based on work flow created by work flow managers. The work flows can be monitored using a work flow monitor. Jobs inside the program are designed in a mapping designer, which creates mapping between source and target. Mapping is a pictorial representation about flow of data from source to target. Transformations such as aggregation, filtering and joining are major examples of transformation.
One of major reason for Informatica ETL tool’s success is its capability of enabling Lean Integration. Lean Manufacturing is a common concept in manufacturing industry to avoid waste. Informatica leverages the same integration model. Informatica comes with internal scheduler unlike many other ETL tools where one needs to use third party schedulers, an added advantage for those who are not using enterpriser scheduler. For many organizations, taking a proprietary scheduler is not strategic, especially if module is in POC phase for business. Informatica follows mainstream marketing strategy where it leverages paper work, press release, web forums and network community. This provides it leading edge in ETL space.
Informatica is the best ETL tool availabale in the market and is used by many established companies such as ADP, Allianz, American Airlines, CA Technologies, CERN, SIEMENS, CSC and Qualcomm among others. Head on to our Informatica Live Online Course and learn more about this amazing tool.
Node.js is intended to run on a dedicated HTTP server and to employ a single thread with one process at a time. The applications are events-based and run asynchronously. Code built on the Node platform does not follow the traditional model of receive, process, send, wait, receive but instead the incoming requests are processed in a constant event stack, sending small requests continuously without waiting for responses. This is a shift away from mainstream models that run larger, more complex processes and run several threads concurrently, with each thread waiting for its appropriate response before moving on.
You can learn more about Node.js and how to develop web applications using it with our Node.js online tutorial that will take you through the length and breadth of all the core and associated concepts. Happy learning!
The charm of an MBA or Masters in Management(MiM) degree has always been appealing, and more so getting it from a world class B-School. Add to this the prestige that comes with a tag of being a Management grad with a fancy job and title, and you have hordes of people applying to numerous top colleges every year! The first step to an MBA or MiM application is the feared GMAT exam. But is it really that scary and demanding to crack? Let’s finds out.
The Graduate Management Admission Test (GMAT) is a computerized aptitude test that aims to gauge the analytical, writing, quantitative, verbal, and English reading skills as a parameter for admission into Management and MBA programs in universities worldwide. The exam itself is governed by the Graduate Management Admission Council (GMAC), and the GMAT score is accepted across the globe in over 2,100 institutions and 5,900 programs.
The exam is quite extensive and intensive, with four specific test sections each testing a particular skill. The Analytical Writing Assessment (AWA) is a single 30 minute section with a writing task, where a test taker analyses an argument and then presents a reasoning and critique of the argument. This is graded on a scale of 6 points, with 6 indicating an outstanding essay. A fairly recent addition of the exam has been the Integrated Reasoning (IR) section (in 2012), designed to measure a test taker’s ability to evaluate data presented in multiple formats from multiple sources. This consists of twelve questions in four formats with a score ranging from 1 to 8. The questions asked in this section were identified in a survey of 740 management faculty worldwide as important for today’s incoming students. Scores of both these sections are not counted against the GMAT score, but these scores are considered holistically when considering an application.
The Quantitative and Verbal sections are the ones whose score contribute to the final GMAT score. The Quant sections seeks to measure the ability to reason quantitatively, solve quantitative problems, interpret graphic data, and analyze and use information given in a problem. There are two sub sections here: problem solving and data sufficiency. The entire section is graded from 0-60, with scores being reported for scores between 6 and 51, and is considered a tough part of the exam. The other scoring section is the Verbal, which seeks to measure the test taker’s ability to read and comprehend written material, reason and evaluate arguments and correct written material to express ideas effectively in standard written English. It contains reading comprehension, critical reasoning, and sentence correction questions with the entire sections graded from 0-51.
Phew! That’s quite a handful! It is not scary but is a revered test, with most people still picking to take the GMAT though the GRE is accepted for Management programs’ admissions these days. There is a certain exclusivity and elite characteristic associated with the GMAT making it the most popular choice. Planning to take the GMAT? Want to ace it? Look no further than our GMAT Test Prep which will help you get the score you deserve. Log on for some amazing learning!