what is fact and dimension in data warehousing

There is a huge amount of data generated every day in life, so what is the use of so much data? In the big data age, the deep combination of big data and cloud computing will have more

What is the paging Method for large data volumes? What is the paging Method for a large amount of data with low LIMIT efficiency? Low LIMIT efficiency Reply content: What

The hard disk is the computer storage data carrier, because the hardware, the software, the malicious and so on many reasons, causes the hard disk storage data all to lose or the partial loss. The loss of important data is also very large after it

improving products from 0.5 to 0.8. because of an existing product, data is placed there. 50 access times out for 100 users. If this problem is solved, the performance is improved by 50%.However, for new products ranging from 0 to 0.1, it is difficult to obtain the

mature frame or wheel that can meet my needs? (Multi-threading, and can run at 7x24 hours, because the number of acquisitions is huge) In addition to ask, how to store the collected content (million to tens of millions), the data there are some digital data, the need for statistical analysis, with MySQL can it? Or is

Data structure to solve what problemHow to store data and information in a computer, and what methods and techniques are used to process the data, are the problems that a data structure needs to solve.Steps to solve the problemUse

application solutions of big Data industry chain core layout.Play--A new play of www.dataqu.cn platformAugust 18 "Number of fun" on the day of the launch, the top 20 users will be registered in the number 1.2 version of a Lifetime Elite membership status and VIP exclusive features. August 18 "Number of fun" on-line conference will be synchronized live broadcast, will release five QQ group red envelope password, quick to "number of fun experience Divi

650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M00/41/00/wKiom1PPw5nAo3BCAADiiUsyqvw722.jpg "Title =" 133716394.jpg" alt = "wkiom1ppw5nao3bcaadiiusyqvw722.jpg"/> What is big data? Big Data is confusing for new engineers. You are using it, for example, goolge se

While reading the Web information Architecture , the Nineth chapter talks about Thesaurus, controlled thesaurus and metadata. At that time, the definition in the book was very vague, and the length of the lecture was small, and there was no care and no complete understanding. The concept of metadata is mentioned again in chapter Fourth of the "splendid Blueprint" today. So I looked for some more information seriously understand a bit.

This is a face-to-face question for today's interview. what I think is simple is to record user data through cookies, and then send it to the server when the webpage is closed. I searched Baidu Statistics online and found GA-relat

What data types are uint8_t/uint16_t/uint32_t/uint64_tIn Nesc's code, you'll see a lot of data types you don't know, such as uint8_t. At first glance, it seems like a new data type, but the C language (Nesc is the extension of C) doesn't seem to have this type of

wait time) before it is released and 10 connections remain in the connection pool when no user is connected. In development, the connection pool fatigue error occurs when you use a connection pool without closing the connection (the Close method that invokes the connection). What are the main roles of the data connec

links. You can use visual style to make the interface look more beautiful ; You can study the user and find out what kind of interface to fit their needs and habits fully. But for software designers, the cloud and the data teacher suggest a deeper understanding UI In itself, the only part of the foundation that handy can benefit you a lot. To Learn more about the UI, you can scan the QR code below and lea

When PHP modifies data from MySql, it is only valid for numeric operations, and non-numeric operations are invalid. what should I do ?. Problem Description: use PHP to modify data to the MySql database to add, delete, modify (the database can be correctly connected). after testing, the code can only add, delete, and mo

Copy CodeThe code is as follows: post.phpfunction Post ($host, $port){$host = "127.0.0.1";Establish a connection$conn = Fsockopen ($host, $port);if (! $conn){Die ("Con error");}Send 5 data in a loop//for ($i = 0; $i {$data = "User_name=admin". $i;WriteData ($conn, $host, $data);echo $i. "";}Fclose ($conn);}functio

What is the data pattern in the Segmentfault framework? In the http://www.infoq.com/cn/news/2012/09/... Mentioned in the. Reply content: What is the data pattern in the Segmentfault framework? In the http://www.infoq.com/cn/n

. ------------the holy War between XML and JSON may become another jihad since Vim/emacs jihad, Cli/gui Jihad and so on, and all jihad will probably not result, because each side has its own truth, and no one will obey. in my opinion, XML is more suitable for data definition and data storage. Its representation of the data