Wednesday, June 27, 2007
"Characteristic of Bitmap Indexes
- For columns with very few unique values (low cardinality)
Columns that have low cardinality are good candidates (if the cardinality of a column is <= 0.1 % that the column is ideal candidate, consider also 0.2% – 1%)
- Tables that have no or little insert/update are good candidates (static data in warehouse)
- Stream of bits: each bit relates to a column value in a single row of table
create bitmap index person_region on person (region);
Row Region North East West South
1 North 1 0 0 0
2 East 0 1 0 0
3 West 0 0 1 0
4 West 0 0 1 0
5 South 0 0 0 1
6 North 1 0 0 0
Advantage of Bitmap Indexes
The advantages of them are that they have a highly compressed structure, making them fast to read and their structure makes it possible for the system to combine multiple indexes together for fast access to the underlying table."
Monday, June 25, 2007
Sunday, June 24, 2007
Saturday, June 23, 2007
Friday, June 22, 2007
The Cereal PC
Sporting a metal ductwork shell, a Wi-Fi card and a touchscreen, this morning companion will automatically serve up the day’s weather and news headlines for breakfast reading.
With antiquated components flooding the surplus-parts market and free operating systems only a click away, building a fully functional computer has never been such a bargain. No, the $72 PC won’t replace your new dual-core, Vista-shredding laptop. But with its compact size and solid-state components (no hard drive or CD drive), it’s perfect for building into custom enclosures and for specific tasks like Web surfing or playing games. The computer boots from a USB flash drive running an operating system called Damn Small Linux that can handle just about any job. Got any grand ideas for a sub-C-note PC? Send them to us at email@example.com."
Wednesday, June 20, 2007
Tuesday, June 19, 2007
Monday, June 18, 2007
Sunday, June 17, 2007
Saturday, June 16, 2007
There are a variety of recipes for Ratatouille and the ingredients often change from cook to cook, but most contain eggplant (aubergine), garlic, onions, zucchini (Italian squash or marrows), and bell peppers. Usually the recipe is seasoned with Herbes de Provence, but (as in this recipe) it can be as simple as parsley and basil. Often the individual vegetable components are cooked separately in olive oil, but I like this recipe that cooks the vegetables together. "
The Kenyan economics expert James Shikwati, 35, says that aid to Africa does more harm than good. The avid proponent of globalization spoke with SPIEGEL about the disastrous effects of Western development policy in Africa, corrupt rulers, and the tendency to overstate the AIDS problem."
To start, my personal opinion is that the new Facebook Platform is a dramatic leap forward for the Internet industry.
Veterans of the software industry have, hardcoded into their DNA, the assumption that in any fight between a platform and an application, the platform will always win."
Productivity porn (or, for those really in the know, 'productivity pr0n') consists of techniques, tactics, and tricks for maximizing personal productivity -- or, as they say, 'getting things done'.
Having enjoyed such fine purveyors of prodporn as Merlin Mann, Danny O'Brien, Gina Trapani, David Allen, and Tim Ferriss, I'd like to return the favor with the following: the Pmarca Guide to Personal Productivity."
Friday, June 15, 2007
She chased down woman who had given her 6 months of hell"
Wednesday, June 13, 2007
A pareau is a traditional Polynesian garment that can be worn as several dress styles, a wrap, or as a skirt. It is one dress, in one size that gives you many unique ways to wear it. They're the perfect casual wear or cover-up, anywhere... just tie it and GO!"
Tuesday, June 12, 2007
Monday, June 11, 2007
Sunday, June 10, 2007
I HAS A CHEEZBURGER ITZ 1
IM IN YR LOOP
VISIBLE 'I has dis many: ' N CHEEZBURGER
IZ CHEEZBURGER BIGGER THAN 11 O RLY?
Saturday, June 09, 2007
"The first is that innovation can come from without as well as within. [...] This approach, known as “network innovation”
Second, Apple illustrates the importance of designing new products around the needs of the user, not the demands of the technology.
a third lesson from Apple is that smart companies should sometimes ignore what the market says it wants today.
The fourth lesson from Apple is to “fail wisely”.
None of these things, of course, guarantees success: you can buy in clever ideas, pursue simplicity, ignore focus groups and fail wisely—and still go bust."
Thursday, June 07, 2007
Tuesday, June 05, 2007
Monday, June 04, 2007
Sunday, June 03, 2007
We offer two different options:
South Fork 2-Day 'Car Access' Camp Trips
2 days on the South Fork
Upper section 1st day, Lower section 2nd day
30 hours, 21 miles
Lunch, dinner, breakfast, lunch "