Oracle, MySQL, Cassandra, Hadoop Database Training Classes in Mesquite, Texas
Learn Oracle, MySQL, Cassandra, Hadoop Database in Mesquite, Texas and surrounding areas via our hands-on, expert led courses. All of our classes either are offered on an onsite, online or public instructor led basis. Here is a list of our current Oracle, MySQL, Cassandra, Hadoop Database related training offerings in Mesquite, Texas: Oracle, MySQL, Cassandra, Hadoop Database Training
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15 December, 2025 - 19 December, 2025 - See our complete public course listing
Blog Entries publications that: entertain, make you think, offer insight
Millions of people experienced the frustration and failures of the Obamacare website when it first launched. Because the code for the back end is not open source, the exact technicalities of the initial failings are tricky to determine. Many curious programmers and web designers have had time to examine the open source coding on the front end, however, leading to reasonable conclusions about the nature of the overall difficulties.
Lack of End to End Collaboration
The website was developed with multiple contractors for the front-end and back-end functions. The site also needed to be integrated with insurance companies, IRS servers, Homeland Security servers, and the Department of Veterans Affairs, all of whom had their own legacy systems. The large number of parties involved and the complex nature of the various components naturally complicated the testing and integration of each portion of the project.
The errors displayed, and occasionally the lack thereof, indicated an absence of coordination between the parties developing the separate components. A failed sign up attempt, for instance, often resulted in a page that displayed the header but had no content or failure message. A look at end user requests revealed that the database was unavailable. Clearly, the coding for the front end did not include errors for failures on the back end.
Bloat and the Abundance of Minor Issues
Obviously, numerous bugs were also an issue. The system required users to create passwords that included numbers, for example, but failed to disclose that on the form and in subsequent failure messages, leaving users baffled. In another issue, one of the pages intended to ask users to please wait or call instead, but the message and the phone information were accidentally commented out in the code.
While the front-end design has been cleared of blame for the most serious failures, bloat in the code did contribute to the early difficulties users experienced. The site design was heavy with Javascript and CSS files, and it was peppered with small coding errors that became particularly troublesome when users faced bottlenecks in traffic. Frequent typos throughout the code proved to be an additional embarrassment and were another indication of a troubled development process.
NoSQL Database
The NoSQL database is intended to allow for scalability and flexibility in the architecture of projects that will use it. This made NoSQL a logical choice for the health insurance exchange website. The newness of the technology, however, means personnel with expertise can be elusive. Database-related missteps were more likely the result of a lack of experienced administrators than with the technology itself. The choice of the NoSQL database was thus another complication in the development, but did not itself cause the failures.
Another factor of consequence is that the website was built with both agile and waterfall methodology elements. With agile methods for the front end and the waterfall methodology for the back end, streamlining was naturally going to suffer further difficulties. The disparate contractors, varied methods of software development, and an unrealistically short project time line all contributed to the coding failures of the website.
Planning on a little spring cleaning and getting rid of all those old electronics? With the way technology changes so quickly, it seems like we no sooner have one new electronic piece and there’s a new one on the market that we absolutely have to have. The result is a ton of used electronics stored away. Now it’s time to get rid of everything, here are some tips on what to do with all that old tech stuff and how to do it safely.
Save on Landfill Waste
Few people really realize where their electronics wind up when they throw them in the trash or dumpster. They assume they’re getting taken care of and just forget about them. According to the Environmental Protection Agency, one of the fastest growing components of landfill waste is electronics. The unfortunate part of this is that these electronics are filled with lead, mercury and other toxic chemicals – chemicals that find their way into our soil and water.
This results in the contamination of our lakes, streams and soil. The best way to avoid this is by knowing where your electronics are going and to dispose of them safely. Contact the recycling center in your area and ask for the best place to dispose of your old electronics.
Think of Security
Our lives are filled with electronic technology, whether it’s in the form of computers, tablets, smart phones or video games. Most of these electronics allow network sharing with people all over the world. With identity theft such a growing concern, much of our private lives and personal information is entered in the hard drives of these items.
Before you dispose of any electronics, make sure the hard drives are wiped clean of all personal information. This requires more than just “deleting” files. If you’re not sure how to correctly get rid of the information, contact a professional to do this for you. Even if you have to pay to have it done, it’s a minimal expense compared to having your private information stolen.
Find New Homes for Your Electronics
Once you’ve cleaned out your electronics of personal information, they may still be worth something to other individuals. You may know of a child or elderly person who would really appreciate a “new” computer or a tablet. Someone who has never owned a smart phone or laptop may be thrilled to suddenly own one, even if they are obsolete to you.
If you can’t find anyone that wants them, consider selling them on places like eBay, Craigslist or one of the many other online auction sites. The old saying, “one man’s junk is another man’s gold” is especially true when it comes to electronics. Many people like building computers using their own parts.
Students in computer-related programs also utilize used electronics as a form of hands-on training. Most schools also take in donated computers, televisions and cell phones. Contact your electric company or school district to get information on where you can take your old electronics. You’ll be not only cleaning out your house but also helping the environment.
Related:
Cloud Computing: What It Means and How It Could Threaten the Traditional Outsourcing Model

Getting involved with the IT, or Internet Technology industry, is a way for you to break into a variety of potential coveted career paths and job openings. Whether you prefer working with the back-end of programming or if you enjoy improve user experience while browsing online, there are many different in-demand IT skills that are useful to obtain today if you are seeking a career in the tech industry yourself.
Cloud Computing
Working with cloud computing, otherwise known as "the cloud", requires you to work within various types of servers that store and access data globally from any location. With the increase in mobile usage, cloud computing is becoming even more prevalent in today's society. When you want to work with cloud computing, understanding the basics of programming and network security is a must. Working in cloud computing is a way to help with building new applications, expanding companies online as well as allowing anyone internationally to locate and access a specific blog, website or mobile app.
UX Design
UX Design is also known as user experience design. A user experience designer specializes in understanding the usability and overall experience a web visitor has when browsing on a site or blog. UX design is essential to ensure that all visitors on a website are capable of navigating the blog properly and accessing the site's content with ease, regardless of the browser they are using or the type of device that is being used to access the site itself. Cross-browser compatibility and ensuring that all websites you are working with are accessible via mobile platforms is another responsibility of many UX designers today. Working in UX design is highly recommended if you believe you have an eye for "good" web design and if you have an interest in improving the overall experience web users for a specific audience have when visiting the blog or website you represent or that you are building for yourself.
IT Security
IT security is one of the fastest-growing positions throughout the entire IT industry and field. IT security requires you to understand network infrastructures as well as how to properly manage each server individually to provide security and protection from potential hackers and online thieves looking to steal sensitive data and information. Maintaining the security of a network and all servers for a company is only becoming more popular with the expansion of mobile phone usage along with the growth of the Internet altogether.
Understanding the variety of IT skills that are in demand today can help you to better decide on a path that is right for you. The more you understand about various IT skills, the easier it is to find a position or career in your future that is most suitable for the type of work you enjoy. Whether you are looking to develop new apps or if you are interested in managing the security of company servers, there are hundreds of positions and skills that are in demand in the IT industry today.
What are the best languages for getting into functional programming?
We’re often asked by companies about how they can get the most value from Agile/Scrum practices. More specifically, they want to know if they are being as effective as best they possibly can be by using the Scrum framework for their explicit needs.
The other objective for individuals is determining if it necessary to be certified in order to be effective in the Agile Scrum world? In short, a good Scrum Master must understand four things: the business they work in, the technology they work with, the Agile and Scrum principles, and, most importantly, people! Based on these facts, Scrum Master Certification is not enough – real life experience and a bit of soft skills should be part and parcel of their training. For organizations, the main goal is to understand industry best practices when adopting and applying agile principles, to build strong teams, understand and distill business needs into software requirements.
In terms of getting a good grip on training for Agile/Scrum, one can opt to pursue a certification in Scrum (CSM) Certified Scrum Master for personal reasons or for a job requirement. Or, one can simply opt to learn the benefits and pitfalls of the methodology and decide the best approach for them.
There are different ways to get started with Agile training. Below are two of the most common paths to Agile our students take.
Tech Life in Texas
| Company Name | City | Industry | Secondary Industry |
|---|---|---|---|
| Dr Pepper Snapple Group | Plano | Manufacturing | Nonalcoholic Beverages |
| Western Refining, Inc. | El Paso | Energy and Utilities | Gasoline and Oil Refineries |
| Frontier Oil Corporation | Dallas | Manufacturing | Chemicals and Petrochemicals |
| ConocoPhillips | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| Dell Inc | Round Rock | Computers and Electronics | Computers, Parts and Repair |
| Enbridge Energy Partners, L.P. | Houston | Transportation and Storage | Transportation & Storage Other |
| GameStop Corp. | Grapevine | Retail | Retail Other |
| Fluor Corporation | Irving | Business Services | Management Consulting |
| Kimberly-Clark Corporation | Irving | Manufacturing | Paper and Paper Products |
| Exxon Mobil Corporation | Irving | Energy and Utilities | Gasoline and Oil Refineries |
| Plains All American Pipeline, L.P. | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| Cameron International Corporation | Houston | Energy and Utilities | Energy and Utilities Other |
| Celanese Corporation | Irving | Manufacturing | Chemicals and Petrochemicals |
| HollyFrontier Corporation | Dallas | Energy and Utilities | Gasoline and Oil Refineries |
| Kinder Morgan, Inc. | Houston | Energy and Utilities | Gas and Electric Utilities |
| Marathon Oil Corporation | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| United Services Automobile Association | San Antonio | Financial Services | Personal Financial Planning and Private Banking |
| J. C. Penney Company, Inc. | Plano | Retail | Department Stores |
| Energy Transfer Partners, L.P. | Dallas | Energy and Utilities | Energy and Utilities Other |
| Atmos Energy Corporation | Dallas | Energy and Utilities | Alternative Energy Sources |
| National Oilwell Varco Inc. | Houston | Manufacturing | Manufacturing Other |
| Tesoro Corporation | San Antonio | Manufacturing | Chemicals and Petrochemicals |
| Halliburton Company | Houston | Energy and Utilities | Energy and Utilities Other |
| Flowserve Corporation | Irving | Manufacturing | Tools, Hardware and Light Machinery |
| Commercial Metals Company | Irving | Manufacturing | Metals Manufacturing |
| EOG Resources, Inc. | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| Whole Foods Market, Inc. | Austin | Retail | Grocery and Specialty Food Stores |
| Waste Management, Inc. | Houston | Energy and Utilities | Waste Management and Recycling |
| CenterPoint Energy, Inc. | Houston | Energy and Utilities | Gas and Electric Utilities |
| Valero Energy Corporation | San Antonio | Manufacturing | Chemicals and Petrochemicals |
| FMC Technologies, Inc. | Houston | Energy and Utilities | Alternative Energy Sources |
| Calpine Corporation | Houston | Energy and Utilities | Gas and Electric Utilities |
| Texas Instruments Incorporated | Dallas | Computers and Electronics | Semiconductor and Microchip Manufacturing |
| SYSCO Corporation | Houston | Wholesale and Distribution | Grocery and Food Wholesalers |
| BNSF Railway Company | Fort Worth | Transportation and Storage | Freight Hauling (Rail and Truck) |
| Affiliated Computer Services, Incorporated (ACS), a Xerox Company | Dallas | Software and Internet | E-commerce and Internet Businesses |
| Tenet Healthcare Corporation | Dallas | Healthcare, Pharmaceuticals and Biotech | Hospitals |
| XTO Energy Inc. | Fort Worth | Energy and Utilities | Gasoline and Oil Refineries |
| Group 1 Automotive | Houston | Retail | Automobile Dealers |
| ATandT | Dallas | Telecommunications | Telephone Service Providers and Carriers |
| Anadarko Petroleum Corporation | Spring | Energy and Utilities | Gasoline and Oil Refineries |
| Apache Corporation | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| Dean Foods Company | Dallas | Manufacturing | Food and Dairy Product Manufacturing and Packaging |
| American Airlines | Fort Worth | Travel, Recreation and Leisure | Passenger Airlines |
| Baker Hughes Incorporated | Houston | Energy and Utilities | Gasoline and Oil Refineries |
| Continental Airlines, Inc. | Houston | Travel, Recreation and Leisure | Passenger Airlines |
| RadioShack Corporation | Fort Worth | Computers and Electronics | Consumer Electronics, Parts and Repair |
| KBR, Inc. | Houston | Government | International Bodies and Organizations |
| Spectra Energy Partners, L.P. | Houston | Energy and Utilities | Gas and Electric Utilities |
| Energy Future Holdings | Dallas | Energy and Utilities | Energy and Utilities Other |
| Southwest Airlines Corporation | Dallas | Transportation and Storage | Air Couriers and Cargo Services |
training details locations, tags and why hsg
The Hartmann Software Group understands these issues and addresses them and others during any training engagement. Although no IT educational institution can guarantee career or application development success, HSG can get you closer to your goals at a far faster rate than self paced learning and, arguably, than the competition. Here are the reasons why we are so successful at teaching:
- Learn from the experts.
- We have provided software development and other IT related training to many major corporations in Texas since 2002.
- Our educators have years of consulting and training experience; moreover, we require each trainer to have cross-discipline expertise i.e. be Java and .NET experts so that you get a broad understanding of how industry wide experts work and think.
- Discover tips and tricks about Oracle, MySQL, Cassandra, Hadoop Database programming
- Get your questions answered by easy to follow, organized Oracle, MySQL, Cassandra, Hadoop Database experts
- Get up to speed with vital Oracle, MySQL, Cassandra, Hadoop Database programming tools
- Save on travel expenses by learning right from your desk or home office. Enroll in an online instructor led class. Nearly all of our classes are offered in this way.
- Prepare to hit the ground running for a new job or a new position
- See the big picture and have the instructor fill in the gaps
- We teach with sophisticated learning tools and provide excellent supporting course material
- Books and course material are provided in advance
- Get a book of your choice from the HSG Store as a gift from us when you register for a class
- Gain a lot of practical skills in a short amount of time
- We teach what we know…software
- We care…














