Articles

Why HTML5 and CSS3

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Since the first time I heard about HTML5 and CSS3, I have been exploring them very keenly. At the same time, I have been trying to re-educate my clients but that has not been so easy. It is sad that most clients still ask for the following:

1. Validate HTML as Strict or Transitional.
2. Validate CSS.
3. Make the website meet Accessibility Level 2+.
4. Make it look the same across all browsers.

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Cloud Computing Explained

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Cloud Computing is all about outsourcing IT infrastructure and applications to run on a remote resource. Most technical people still believe that Cloud Computing is the same as traditional web-hosting model. Among the multiple factors that led to the evolution of Cloud Computing, the way Internet Service Providers (ISP) matured over time is one. The figure below illustrates how ISP turned into Cloud Computing.

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Adoption of Agile Methodology in Data Projects

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Before discussing about agile methodology in data projects, first let’s briefly discuss about the nature of data projects. In almost all data projects, there are mainly three steps, popularly known as ETL,: Extraction (E), Transformation (T), and Loading (L). At Deerwalk, the three main steps of data projects are data import, data mapping, and application processing, and an analogy can be drawn between these three steps with ETL.

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Security Risks and Security Testing

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Servers, clients, smart phones, routers, switches, gateways, VPNs, VSATs, satellites and the like are nothing but pieces of hardware and software that allow individuals to share data and interconnect. With these technologies, we have created global systems which have broken traditional barriers and provided us a lot of conveniences.

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EDI Standards in the Healthcare Industry

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Typically health care providers will have patients who are customers of many different insurance companies. When a provider sends out billing information it has to send it in various formats as expected from the different companies. In some cases it goes even beyond data formatting. For example the billing code for a medical procedure could be different across multiple insurance companies. This forces providers to customize billing for each individual insurance company, which in turn increases the operating expenses.

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SQL Query Optimization (Part 1) – Introduction To Execution Plans and Indexes

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As xxdata engineers, our work time is mostly consumed with writing queries that produce the desired output or with designing systems that can properly capture the required data. However, we frequently run across situations where we also need to optimize our queries for efficiency. As entry level data engineers, (or even when we have gained much experience) we might tend to believe that all queries that produce equal output must be equivalent in resource consumption. This is a misconception most of us learn the hard way.

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Localhem Case Study

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The application is an online shopping portal which provides a platform for boutiques around all over the US to sell their designer product lines. People from all around the world can shop all the best brick-and-mortar boutiques from this one site. Regardless of where someone lives they can stay in touch and shop their favorite stores. For example a person in Seattle who transfers from Boston can still shop their favorite boutiques on Newberry Street from the Northwest.

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