uverse landline

not belong to X), X contains the candidate code, then r∈4nf. 4NF is a multi-valued dependency that does not allow non-trivial and non-functional dependencies between attributes that restrict relational patterns. Obviously a relational pattern is 4NF, then it must be bcnf. That is, when non-primary properties in a table are independent of each other (3NF), these non-primary properties should not have multiple values. If there are multiple values, it violates the fourth paradigm. The multi-valu

A high score problem A call field in a database table caller Caller has a regular mobile phone number, there are 0 mobile phone number, there are 010-1234567 such as landline number, etc. How can I get rid of the phone number with 0 in front? Efficient implementation ------Solution-------------------- Mobile phone number and landline number have the following differences Length Is there a "-" in the numbe

My Android advanced tour ------> four call transfer scenarios, android advanced The operator provides the following call transfer scenarios: 1. Always call transfer: No matter what status the current mobile phone is in, incoming calls will be transferred to the specified phone number. You should be very careful when using this type of call transfer. If this type of call transfer is enabled, you will never be able to receive the call, and your mobile phone will not respond. 2. Call Transfer When

of details. Second, we should first giveAir TicketThe hotline "called and asked me to understand that the fire really received the ticket and sent it to the door service, which is the phone number provided on the website. Therefore, as long as you stick to it, you will surely be able to get through and be able to book it. At nine o'clock A.M. on the 13th, you have prepared your friend's mobile phone number and contact address. Start to call the Beijing fenghuo ticket center. Dial. Afte

This article is mainly to share the PHP extract string in the mobile phone number implementation code, PHP through the regular expression of the string to extract the phone number and judge the operator, simple and quick and convenient, can extract multiple mobile phone number. The following through the example code to give you a detailed introduction, the needs of the Friends of the reference bar hope to help everyone. 1. Code 2. Test results array ([mobile] = = Array ([0] = = Array ([numb

, 4 }-)? D {7,8}) $ | (13 [0-9] {9 })Extract the network link in the Information: (h | H) (r | R) (e | E) (f | F) * = * ('| ")? (W |/|.) + ('| "| * |> )?Email address in the extracted information: w + ([-+.] w +) * @ w + ([-.] w + )*. w + ([-.] w + )*Extract the image link in the Information: (s | S) (r | R) (c | C) * = * ('| ")? (W |/|.) + ('| "| * |> )?Extract the IP address in The Information: (d +). (d +)Extract the Chinese mobile phone number from The Inf

1 Importjava.util.Arrays;2 3 /*4 the role of regular expressions:5 6 1 matches7 8 2 Cutting9 Ten 3 Replacement One A * */ - Public classDemo1 { - Public Static voidMain (string[] args) { theIsphone ("0314-16610306"); -CUTSTR1 ("Naruto"); -CUTSTR2 ("Everyone's home tomorrow, the fun of the day"); -Replacesame ("Everyone's home tomorrow, the fun of the day"); + } - + //Match Landline: Area code-host number: first 0, length 3-4-bit h

Dialing rules for international calls (please click Http://www.zhcall.com/charges to view the charges and codes for international calls) 00+ Country code + mobile phone number (fixed front plus area code) For example: mobile phone: 001123456789; Landline:: 001-626-1234567 China Mainland Number Dialing method (temporarily does not support calls in Xinjiang and Tibet region) Domestic mobile phone number directly dial,

Landline Cell phone Tom 020-84444444 13777777777 23 John doe 020-85555555 13888888888 34 As above, because the phone attributes can be split into landline and mobile phones, so does not meet 1NF, modified as follows: Name Landline Cell phone

First, the goal1, processing 110, 10086, landline and other non-mobile phone number of the place of attribution;Second, the Code implementation1, determine whether the text in the input box conforms to the format of the mobile phone number (1, the second is 345678, followed by 9 digits are 0-9 integers), according to the characteristics of the mobile phone number to determine its regular expression "1[345678]\d{9}", in the code is the expression "^" b

Enterprise VoiceVoice telephony-SIP protocol for VoIP through the communication of the SFB server and PSTN gateway AMP;PBX devices in the organizationDesign and deploymentVoice environment within the current organizationPSTN Gateway +PBXSIP Trunk+pbxSFB and voice environment integration through the Mediation server roleMigrate all to the SFB environment-Deploy mediation server independentlyExisting voice environment and SFB mix-collocated to the front-end server roleConfiguring SFB and PSTN inte

IP address in The Information: (d +). (d +)Extract the Chinese mobile phone number from The Information: (86) * 0 * 13d {9}Extracted Chinese landline numbers: (d {3, 4}) | d {3, 4}-| s )? D {8}Extract Chinese phone numbers (including mobile and landline phones) from the Information: (d {3, 4}) | d {3, 4}-| s )? D {7, 14}Extracted Chinese Zip code: [1-9] {1} (d +) {5}Extracted Chinese ID card number: d {18}

the inclusion relationship of the paradigm. If a database design conforms to the second paradigm, it must also comply with the first paradigm. If it complies with the third paradigm, it must also comply with the second paradigm... L 1nf: the attribute cannot be divided. We have already introduced the concept of attribute values. We say that it is "inseparable ". The first paradigm requires that attributes cannot be divided. So what is the difference between it and the attribute value? Here is a