Oracle, MySQL, Cassandra, Hadoop Database Training Classes in Mc Kinney, Texas
Learn Oracle, MySQL, Cassandra, Hadoop Database in Mc Kinney, 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 Mc Kinney, Texas: Oracle, MySQL, Cassandra, Hadoop Database Training
Oracle, MySQL, Cassandra, Hadoop Database Training Catalog
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- RED HAT ENTERPRISE LINUX AUTOMATION WITH ANSIBLE
15 September, 2025 - 18 September, 2025 - Enterprise Linux System Administration
28 July, 2025 - 1 August, 2025 - Python for Scientists
28 April, 2025 - 2 May, 2025 - RED HAT ENTERPRISE LINUX SYSTEMS ADMIN II
18 August, 2025 - 21 August, 2025 - LINUX SHELL SCRIPTING
30 June, 2025 - 1 July, 2025 - See our complete public course listing
Blog Entries publications that: entertain, make you think, offer insight
Learning SQL development can seem like an overwhelming task at first. However, mastering just a few key points will help ease your way through 80 percent of the day-to-day challenges when writing stored procedures and solving common problems. Here are three important SQL development factors to keep in mind:
Outer Joins
One of the most crucial things to understand in SQL server are joins. Joins are a way to retrieve data from two or more tables based on logical relationships between them. Joins dictate how Microsoft SQL Server ought to use data from one table to select the rows in another table.
In my experience inner joins are intuitive while outer joins can present additional hours of grief by overlooking associations in the other table(s). The outer join is the key to answering questions about what the database does not have. For example, if you need to make a query to display all the students who are without report-cards, you’ll need a left join to get all students coupled with a “where clause” to return the ones who have nulls for their report card table columns in the results.
Many talented Java script programmers have muddled through the SQL Server by deficient coding around the inner join. As a result, their queries can take five hours to run, whereas, properly written left joins, can take only two seconds to run.
Aggregation
Grouping results comes up in SQL a lot more than you might think. Knowing how to write a query when answering questions such as, “What’s the average grade for each teacher’s student list?” is invaluable. This kind of question cannot be answered with a single table or solely by joins. You’ll often find you need to use joins in conjunction with group by statements. Always write the raw query first and then look at the results. Next, you have to figure out the best way to group them, rewrite your select clause and add a group by clause in the end.
Digging Through Data
I find this is the most lacking skill in many programmers. In fact, many otherwise-talented programmers holding Master’s Degrees fail to get jobs because they couldn’t analyze rows of data objectively during interviews. It’s just something that’s not taught but is crucial to get under you belt. Why? Eventually, some query is not going to perform as you may expect. And, the only way to find discrepancies is to look at rows of data, identify what join isn’t finding a match or where bad data is throwing things into chaos. Get familiar with how joins actually work, even if you have to manually walk through the logic of a large stored procedure’s tree of joins. It’s boring and time-consuming but absolutely necessary.
Take the time to master the core skills that will make you a successful SQL Programmer and avoid queries that run for five hours!
Invoking an external command in Python is a two step process:
from subprocess import call
call(["ls","-1"])
A business rule is the basic unit of rule processing in a Business Rule Management System (BRMS) and, as such, requires a fundamental understanding. Rules consist of a set of actions and a set of conditions whereby actions are the consequences of each condition statement being satisfied or true. With rare exception, conditions test the property values of objects taken from an object model which itself is gleaned from a Data Dictionary and UML diagrams. See my article on Data Dictionaries for a better understanding on this subject matter.
A simple rule takes the form:
if condition(s)
then actions.
An alternative form includes an else statement where alternate actions are executed in the event that the conditions in the if statement are not satisfied:
if condition(s)
then actions
else alternate_actions
It is not considered a best prectice to write rules via nested if-then-else statements as they tend to be difficult to understand, hard to maintain and even harder to extend as the depth of these statements increases; in other words, adding if statements within a then clause makes it especially hard to determine which if statement was executed when looking at a bucket of rules. Moreoever, how can we determine whether the if or the else statement was satisfied without having to read the rule itself. Rules such as these are often organized into simple rule statements and provided with a name so that when reviewing rule execution logs one can determine which rule fired and not worry about whether the if or else statement was satisfied. Another limitation of this type of rule processing is that it does not take full advantage of rule inferencing and may have a negative performance impact on the Rete engine execution. Take a class with HSG and find out why.
Rule Conditions
Have you ever played a game on your iPhone and wondered how to share it with your friends? Of course, not everyone has iPhones, and they aren’t always watching the leaderboards on the Gaming app, provided by Apple. Well, guess what? You don’t have to take a whole other camera to take a picture of your iPhone to create a photo of that particular score you have achieved. All you have to do is simultaneously press the “Home Button” and the “Lock Button” on your iPhone. After that, your iPhone should consequently flash to white, as if it were snapping its shutter, and taking a picture. Afterwards, you should be able to find the picture in your Photo Albums and share it with your friends.
But, taking screenshots of your iPhone doesn’t always have to deal with your game scores, you can take screenshots of almost any happening on your phone and share it with people! Have you ever had a memorable texting conversation with your friend, where you mistyped something, and the conversation went haywire? Sharing it becomes easy by using this feature. Want to show how odd a website looks on your iPhone compared to looking at it on your computer, and give it to their support to fix it? Take a screenshot of it! The possibilities of this feature are endless, and can become timeless with a simple picture.
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…
Interesting Reads Take a class with us and receive a book of your choosing for 50% off MSRP.
