what is use of materialized view in oracle

This problem has actually plagued me for a long time. I have asked many people what is "null? What's the purpose? Most people answer: "null is a special 0 defined by the system. Pointing your initialized pointer to it can prevent the evil effects of" wild pointer. " Today, I met a C-language pen question, which is

Huawei Mobile Super Night mode uses advanced algorithms to enhance processing and re-adjust the white balance after shooting technology, by shooting multi-frame photos to synthesize the best results, support long-time exposure, suitable for shooting night Street View. The following is a comparison of normal mode photography and Super Night mode photography.So, P20 phone how to shoot good night? There

has a certain security Because the view is virtual, it doesn't exist physically, it just stores the collection of data, and we can The key field information in the base table can be given to the user without a view, which is a set of dynamic data Together, the data is upd

Standard Edition, it is difficult to simply transfer the database to other platforms.11. Some parallel operations are not supported, including parallel query, parallel DML, Parallel Index build, parallel data pump export and import.12. Streams is not supported, and a high availability feasible solution is missing.13. The multi-master mode of Advanced Replication

static void Main (string[] args) {Permute ("abc");}public static void Permute (String str) {char[] Strarray = Str.tochararray ();Permute (strarray, 0, strarray.length–1);}public static void Permute (char[] list, int. Low, int.) {int i;if (low = = high) {String cout = "";for (i = 0; I cout + = List[i];System.out.println (cout);} else {for (i = low, I Char temp = List[low];List[low] = List[i];List[i] = temp;Permute (list, low + 1, high);temp = List[low];List[low] = List[i];List[i] = temp;}}}}Simp

articles because I was not familiar with the view. I hope you can discuss this topic in your essay. At the end of the article, I will tell you about the use of the index view in our company's system. I hope you will share your comment on how to apply the index view in the system. Let the younger brother learn about th

1. Oracle Installation Please refer to the following link for more information: http://wenku.baidu.com/view/d01ffd43336c1eb91a375d68.html. 2. Use the command line sqlplus to connect to Oracle (1) Check the listening status C: \> LSNRCTL status LSNRCTL for 32-bit windows: Version 9.2.0.1.0-production on 2005 11:01:01 Co

[Reprinted] HTML code that does not use the "Compatibility View" is mandatory, and the Compatibility View is In Versions later than IE8, there is a "Compatibility View", making many new

1.oracle InstallationRefer to http://wenku.baidu.com/view/d01ffd43336c1eb91a375d68.html, no longer repeat here2. Command line sqlplus Connect Oracle(1) Check the monitoring statusc:\>lsnrctl StatusLsnrctl for 32-bit windows:version 9.2.0.1.0-production on 2 August-June-2005 11:01:01Copyright (c) 1991, 2002, Oracle Corp

I don't know which of the following Chinese and western cultures has integrated Chinese pinyin. This kind of thing is naturally not difficult, but it has brought a disaster to Chinese characters After computer invention. Of course, if Chinese people start to use English at the end, this Chinese Character disaster may not be a good thing, but in any case, it is de

What is a relational database? Oracle database architecture, Oracle cluster introduction, and oracle Architecture What is a relational database? Databases based on Relational Models.

[Translated from mos] the user account in oracle db is locked-view the attempts made by oracle users, mosoracle Reference Original: Users Accounts Getting Locked. (docid 791037.1) In fact, this article is written for other oracle