Data Warehouse is a storage of an organization’s historical data. Usually, data warehouse is built to provide a decision support system to the management. Data warehouse can be mined (using data mining) and queried to collect overall and summarized business information that significantly helps in decision making. It can provide trends over many years.

Operational databases are optimized for day to day operation access. Here, the relationships are normalized and further divided into more relations/tables to make accessing faster that also reduces data traffic among the systems. But data warehouse does the reverse, where relationships/tables are denormalized as much as possible to provide the required information to the management. As data warehouse provides summarized information de-normalization helps, otherwise the data would be required to collect from many tables and the queries may be running over data for 10 years (millions/billions of records). Usually, data warehouse is created separately from the operational databases.

Microsoft SQL Server and Oracle both have supports and tools to create Data warehouse Systems. There are also free tools for the purpose. From: http://sitestree.com/?p=4816
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Post Data:2006-10-13 06:30:41

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Canada has critical professional shortages in software industry. You can check the skills that are in high demand in software industry.

• http://www.cic.gc.ca/english/work/special-tech.asp

From: http://sitestree.com/?p=5275
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Post Data:2009-09-27 23:47:11

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Follow this link: NSERC Funding for Research Based Masters, PHD, and Post Doctorate Programs

From: http://sitestree.com/?p=5262
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Post Data:2009-04-04 23:44:09

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The following tools may be useful
-Advanced SystemCare 3 Professional
-ioBit’s Registry Defrag and Smart Defrag
-Spybot Search & Destroy
-Avira Antivirus (Latest Version, Best Rated Virus Scan Available

From: http://sitestree.com/?p=5238
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Post Data:2008-02-14 13:05:22

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• Linkedin Answers:What if you could hire employees that do everything they are supposed to AND genuinely want to be there?
• Low Level Reward and Recognition Programs Best Practices – What Works? What Doesn’t?
• Does your company have a formal employee engagment program?
• Employee engagement . Do you feel connected with your organization? If yes, why? if not, why not?

From: http://sitestree.com/?p=5218
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Post Data:2009-11-14 19:37:13

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Just Some Internet Resources, Not my opinions

• A site dedicated to the topic: Measuring the Performance of Knowledge Workers
• Managing Knowledge Workers.

  “Emphasize collaboration and professionalism; de-emphasize incentive schemes and performance measures. Play up knowledge workers’ natural tendencies to be committed to their work and its overall objectives.

  Emphasize iterative work structures rather than linear, sequential ones. Don’t overplan. Alternate between unstructured individual experiences and structured integration of individual work.”

• Unrelated but seems a good article: Self-Confidence for Leaders

From: http://sitestree.com/?p=5207
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Post Data:2010-05-18 11:53:43

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Just some resources.

• Starting your Own Company
• Ian Landsman Knows How To Build a Small Software Company
• Hitting the High Notes
• Blog on Creating a Software Company
• How to sell your software for $20,000

I know sending your web-site visitors to other web-sites is not a great idea.

From: http://sitestree.com/?p=5205
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Post Data:2012-07-11 18:57:46

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You can buy either external or internal hard drives. You can replace existing internal hard drive/s with your purchased hard drive/s. There are ways (software) that can create an exact image of your existing data into the new drive. The new drive will boot and work like the existing/old hard drive/s.

What to consider before buying an external hard drive? For laptops? If you want a really portable one – then find something that gets power through USB/Interface ports. Any external hard drive should work with laptops but desktop versions will/may need power connections

Western Digital, Seagate are good hard drive companies. Among others Hitachi, Samsung can be ok.

You need to check the port type the hard drive uses, and also does your laptop supports that type of ports/interfaces or not. Almost all supports USB (2.0), some support SATA, FireWare. SATA may be bit faster than USB and FireWare where USB and FireWare give approximately equivalent speed. However, SATA as an external port is not common.

To select right size, you need to think what you need, how long/many years will you use the hard drive. You may never exceed/need 320 GB. How much can you afford?Size also determines the price. At present, to my knowledge, the maximum capacity for portable laptop drives is 500 GB. Price range: 70-160 CDN$. Prices may vary from store to store a bit also with brands and models. Also, check that drives of the same size from the same company may be priced almost similar. At this point 300 and 400 GB from Western Digital are priced at 129.99.

Are you getting the right price?
If you want to save on price, it’s always a better idea that you plan your purchase a little before than you will really buy the product. If you need instantly, you may have to sacrifice on price. Now to get a better price, you can use the price comparison services such as nexttag, pricegrabber. Also, use web-sites such as newegg.ca, newegg.com, tigerdirect.com/ca to compare prices. Also, use cnet.com reviews on products. You can check the product reviews at cnet.com to find out the pros and cons of the particular hard drive that you plan to buy.

• Drives at PriceGrabber
• at NextTag: Price Comparison

Also check for data protection features of the drive. Checking for technical support of the shop or the manufacturer is always a must. Personally, I do not prefer to accept shop provided extra service/support plan.

Check for the Rotation Per Minute(7200, 5400) and Data Transfer Rates of the Drives (400-480 Mbits/sec for USB/FireWare, SATA more). Usually, the more the better. Also, the drive should be reliable/stable. Research online for reliability/stability of the drive (company/brand/model)

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Post Data:2012-09-01 14:04:17

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• “Virtual machines are a technology that was invented in one era, overlooked in a second, and rediscovered in a third”. D. A. Grier
• Network service providers are looking for solutions that provide faster data transfer and require less number of equipments. Wavelength-division-multiplexing passive optical networks (WDM-PONs) may be the future. Other related technologies:
  • TDM: Time Domain Multiplexing. Time is divided among users. eg: telephone system
  • FDM: Frequency Domain Multiplexing. Frequency channels are divided among the users. Context: Radio Waveeg : television broad casting
  • WDM: Wave Length is shared among users. Context: Optical Fiber Technologyeg: optical networking
• “As microprocessors have become more complex, on-chip communications, traditionally handled by buses, have become a performance bottleneck. Chip makers are looking into network-on-chip systems to address this issue”. D. Geer
• We use search everyday to find information. This searching helps to build our knowledge-base. In the process, we use different strategies to find out the target information from the search result. Research is being carried out to create tools that in addition to providing search results will provide options and tools that will help to utilize different strategies to find out the target information (quickly) from the search results. Relation Browser from the University of North Carolina is such a tool.

From: http://sitestree.com/?p=5197
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Post Data:2007-10-10 03:25:24

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