laws against cyberstalking

Label:Iron Law One: there is no free lunch, it takes a price to use an index.Iron Law II: Do not index columns that are rarely involved in a query or that have more duplicate values.Iron Law III: For columns that are queried by scope, it is best to index.Iron Law four: if the table has a primary key or foreign key, it must be indexed.Iron Law V: for some special data types, do not create an index.Iron Law VI: An index can be integrated with a collection of Where statements. SQL Index establishe

1.250 Law "Behind every customer, there are roughly 250 friends and relatives," says Rudd.   If you win the favor of a customer, it means winning the favor of 250 people, whereas if you offend a customer, it means offending 250 customers. In your

Recently a lot of friends asked me how to analyze the site and then write a site diagnosis, in fact, this problem is not should become a problem, because the site diagnosis is only a general situation of a website to do an analysis, since it is a

Think about 2012 years of Internet Webmaster Conference in the past some days, when Lei June, Li Guoqing and other network industry success representative on stage speech, whether we envy. The internet is actually a fertile ground for creation, we

(From the art of Unix programming, Eric S. Raymond, 2004.5) 1. Rule of modularity: Write simple parts connected by clean interfaces.2. Rule of clarity: clarity is better than cleverness.3. Rule of composition: design programs to be connected with

Earlier this year, a friend introduced me to having dinner with a VC in New York City. At that time, the partner was excited to share with us the news that New York surpassed Boston for the first time to become the second largest tech venture city

1. Law 250 Rad believes that there are roughly 250 friends and family behind each customer. If you win the favor of a customer, it means you win the favor of 250 people. Otherwise, if you offend a customer, it means you offend 250 customers. In your

Law 1: people are often good at learning from the content of things, rather than learning from things themselves.The company's pldp/pmdp training is very effective. The participants learned how to make a qualified PL/PM, but did not learn how to do

Gold law for successful earning 1. maintain a positive attitudeThere is only a small difference between people, but such a small difference often leads to a huge difference. A small difference is whether the mentality is positive or negative, the

  1. lansideng principle: when you climb up, you must keep the ladder clean; otherwise, you may slide when you come down.Author: American manager ransden.Comments: only when there is a degree of rejection will we not be able to retreat. If you

L make sure that case 1 works properly before case 2 starts This statement in the kitchen is: "Before starting to cook the next dish, give the current dish to the customer ". The biggest problem in software development is that a lot of tasks are

    A man's taste lies in choosing his wife. Choosing a wife is like choosing a life. VulgarIn other words, male are afraid of wrong behaviors, and female is afraid of marrying male.

I. Common mistakes made by new users I saw many posts in the Forum Code There is a common basic error and the field type is incorrect. Program It is closely connected to the database. single quotation marks are used for text or time fields of the

Law 1.250 Rad believes that there are roughly 250 friends and family behind each customer. If you win the favor of a customer, it means you win the favor of 250 people. Otherwise, if you offend a customer, it means you offend 250 customers. In your

Law 250 Rad believes that there are roughly 250 friends and family behind each customer. If you win the favor of a customer, it means you win the favor of 250 people. Otherwise, if you offend a customer, it means you offend 250 customers.

  · AnyProgramOnce published, it means it is out of date.· It is easier to adjust the needs according to the program than to make the program adjust as needed.· If a program is useful, it will be changed.· If a program is useless, it must be

· AnyProgramOnce published, it means it is out of date.· It is easier to adjust the needs according to the program than to make the program adjust as needed.· If a program is useful, it will be changed.· If a program is useless, it must be commented

The recall rate is the ratio of the number of retrieved documents to the number of relevant documents in the document library. It measures the query completion rate of the retrieval system (search engine; accuracy is the ratio of the number of

Evan Williams is the founder of Blogger and the founder and CEO of the podcast service website Odeo. Based on his own experience, he listed 10 Rules that should be followed by Web Startups (Ten Rules for Web Startups). The excerpts and comments are

After finishing, add some personal opinion, feel still very useful, share. 250 law"Behind every customer, there are roughly 250 friends and relatives," says Rudd. If you win the favor of a customer, it means winning the favor of 250 people, whereas