radio terms

additional information to the execution plan, such as query field information, default false > COSTS: Display execution plan, default True > Buffers: Default False, the precondition is analyze > Format: The default format is text The cost constants for PostgreSQL are as follows: > Seq_page_cost-The cost of a single block of continuous block scanning operations. such as full table scans > Random_page_cost-The cost of a single block of random block scanning operations. such as index scans > C

Photography-related terms gwj233 2018.2.14 Object (Focus) + light (quantity, quality, bit, ratio, color) + composition (plane, space). 0x01 recognize Exposure 1. What is photography: the process by which light is drawn, that is, by the light reflected by the object, the photosensitive medium is exposed. (by light to represent the shape of an object, the texture of the body color.) ）2, the target starting point: Control the light, so that the brightne

program to the following form, using a pair of iterators that represent the range of elements to construct the VEC. Istream_iterator (ostream_iterator) an iterator that writes the output stream. (17) The random-access iterator (random-access iterator) supports the use of bidirectional iterators, plus the relational operators, subscript operators, and arithmetic operations on iterators that compare iterator values, thus supporting random access elements.(18) A reverse iterator (reverse iterator)

For mobile web terminals, you need to know the application of devicePixelRatio in terms of devicepixelratio and devicePixelRatio. What we are talking about heredevicePixelRatioActually, it referswindow.devicePixelRatioSupported by all WebKit browsers and Opera.Concept DevicePixelRatioIt is the ratio of physical pixels on the device to device independent pixels (device-independent pixels (dips), that is, devicePixelRatio = screen physical pixels/device

Every term represents either a technology or a standard. Are you familiar with these terms as a member of the IT world?Do you know what they refer? Do you know the purpose of their creation? Have you understood the idea and essence of the designer?Keep up with the times, never be out! If any omission exists, please add it! The content is recommended on the first floor and then addedProtocol HTTP (HyperText Transfer Protocol) TCP/IP (Transmission Contr

Html 5 dialog Tag: defines special terms or phrases, and dialog tag In html5, the Defines a dialog box or window. Attribute Value Description Open H5 Open Specifies that the dialog element is active and the user can interact with it. H5: new attribute in HTML5. Which browsers support Currently, only Chrome and Safari6 support the HTML5 had the

Optimistic about your website-common WEB security terms-CSRF attacks1. A brief description of CSRF (Cross-site request forgery, also known as "one click attack" or session riding, usually abbreviated as CSRF or XSRF, is a type of malicious use of websites. CSRF uses trusted websites by disguising requests from trusted users. 2. Common Features of CSRF rely on user identification hazards websites use website's trust in user identification to spoof user

The ability to understand prototype links is poor in terms of language expression. Share my understanding of prototype and prototype chain Prototype object: Function People (nameValue, ageValue, fondValue){This. name = nameValue;This. age = ageValue;This. fond = fondValue;} People. prototype. rule = function (){Console. log (this. name + 'said: Everyone needs to contribute, everyone has a dead ')}People. prototype ={Insteresting: 'roasted Sweet Potat

JNI.JNI technology is divided into two parts:Java side and C language side . And is dominated by the Java side.| -First, Java programmers define some native methods on the Java side and provide these methods in the form of a C - language header file to C programmer .| -Then, C programmers use the C language to implement functions defined in the header files provided by the Java programmer .| -Next, the C programmer Packages the function into a library file and gives the library file to the Ja

of XML's popularity has been hard to verify, only known by the Java Enterprise application and the DOM (Document Object model) standard of the East wind. XML in Java enterprise applications is often used for the following purposes: Configuration file and transport format (SOAP, Simple Object Transfer Protocol). With the increase of Java application, the application of XML is also widening, but the whole is not out of these two aspects.If just as a key-value pair type configuration file format,

can use SQL statements to access the database data dictionary. § 2. 2.2 in simple terms, a tablespace is a set of one or more data files (physical files) (logical files ). The following table space is generally used: 1) system tablespace) It is an essential part of different versions of Oracle. It stores some information about the Oracle system and generally only has one system tablespace. 2) Temporary tablespace (temporary tablespace) Since Oracle o

Explanation of common terms (continually revising ing) XML: XML is extensible MarkupAbbreviation of Language XML is a markup language similar to HTML. XML is used to describe data. XML tags are not pre-defined in XML. You must define your own tags. XML uses document type definition (DTD) or schema to describe data. After using DTD or schema, XML is a self-described language. XSLT: a language used to convert the XML document structure.

From: http://bbs.game.mop.com/viewthread.php? Tid = 1152686 extra = Page % 3d1 Tribe of the Handbook on translation of "Common Terms" and "orcs" How can we communicate with LM?Some people said/me in the early days. In fact, what the other party sees is just a clear one. "XXX has made some strange expressions"Another method is that a hunter catches a pet and communicates with him by name. It is theoretically feasible, but if you are not willing to dis

From: http://banditjava.iteye.com/blog/253184 Recently, Brother monner shared a search engine article "principles, technologies, and systems", which is very rewarding. Next I will list the terms. Let's take a look. Appendix. TermsB:Semi-structured data (semi-structured data). Compared with plain text, web page data is structured and displayed in HTML annotations; however, compared with the data of relational databases with strict theoretical models, t

Directory (Directory) A directory is a manually edited search result. Most directories rely on manual submission instead of spider ). (See Seo and search engines .) Keywords, keywords, and key phrases (Keyword,KeytermAndKeyphrase) Keywords, keywords, and key phrases are the words that the Web site sorts on the search engine results page (also known as serp. Depending on the site audience, you can select a word, a combination of multiple words or the entire phrase. For simplicity, this arti

Workflow Terms and Definitions Workflow It is very simple. It is the process from the beginning to the completion of the work. A workflow consists of process logic and route rules. The process logic defines the task sequence and the route rules that must be followed, as well as the deadline and other business rules implemented by the workflow engine. Process Definition A graphical process definition or flow chart represents

Several terms: HFP (hands-free profile) headset mode: Allows a bluetooth device to control the phone number, such as answering, hanging up, rejecting, And dialing the voice. The rejection and dialing depend on whether the Bluetooth headset and phone number are supported. HPS (handset profile) headset Mode Used to support use between Bluetooth headsets and mobile phones Hid () Man-Machine Interface Device Configuration File The hid configuration file d

Key terms in the Java White Paper: Simplicity: Java is easier to learn than C ++. Java removes the incomprehensible features rarely used in C ++, and many syntaxes are similar to C ++. Object-oriented, modern programming languages are almost all object-oriented. Network skills, powerful and easy-to-use Java network capabilities. Robustness. Java uses a pointer model instead of a display pointer to eliminate the possibility of overwriting m

For example, if we want to produce commercial mobile phones, some terms will be involved. These names usually only appear in OEM and ODM. However, the current devices, especially the production of custom devices, we have the opportunity to join. The following are some related procedures. The collection here comes from the Internet, but the source is not recorded, and I am too lazy to find it again. In the chronological order of the process: 　　EVT (Eng

VLIW: (very long instruction word, super-long command) a very long command combination that connects many commands to increase the speed of operation. VLIW is command-level parallel, hyper-threading is thread-level parallel, and multi-core is Chip-level parallel. These three methods are an effective way to improve the performance of parallel computing. Among them, the VLIW architecture is the architecture designed by multiflow and cydrome in 1980s. The EPIC architecture is derived from VLIW.