Title: Database Design Specifications
Version: V2.0
Revision document history:--- Date -- | --- version -- | -- Description ----How to get started with V1.02003.6.17 V2.0 refresh the 1.0 content
Database Design Specifications1 Purpose
Standardized database design.
2 Overview
This article discusses the standardized ideas and naming rules of database design from the aspects of database design principles and design documents.
3. Database Application Structure
Based on the analysis of general busin
Boss is short for Business Operations Support System. It covers the functions of previous systems, such as billing, settlement, business, accounting, and customer service, centralized and unified planning and integration of various business functions is an integrated support system that fully shares information resources.
At present, China is still in the initial stage of Boss construction. The first thing we can do is to vertically integrate differe
Network transmission protocols, as the name implies, are the specifications and standards used during network transmission. We are familiar with the TCP/IP protocol. However, there are not only transmission protocols in the Internet, but also network transmission protocols in other usage specifications. Now let's take a look at this aspect.
Network protocols include the Internet. For example, communication between people must follow certain rules, and mutual communication between computers must
Ipx/spx/netbios compatibility protocol in WinXP and officially declares that NetBEUI protocol is no longer supported. However, in the actual use of the establishment of small LAN, the use of the two Microsoft-supported protocols is not satisfactory. For example, in the process of solving the slow problem of the Network Neighborhood, the author adopted a number of methods, although the speed of the Network Neighborhood is better, but still slow as a s
:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:‘;export LS_COLORS
Simply put, the file is compressed into a variable, and each configuration is separated by a colon. We can see that the second di = 01; 35 is our configuration.Finally, export ls_colors sets this variable as a global v
and project management software, can make differentCost budgeting, it's an easier cost-budgeting tool. Proper application of computer tools helps to changeThe accuracy of the budget.23. What are the results of the budget?A: Baseline cost: The baseline cost is a time-independent budget that is used to measure and oversee project executionCost.24. What are the four major aspects of cost control measures?A: 1. Cost control summary; 2. Cost control method; 3. Content of cost control; 4. Basis of co
After talking so much, let's get started. This article is long. Please watch it with patience.What is shopping cart?A traditional shopping cart is a type of trolley in a supermarket that stores the selected item temporarily before the customer settles. In June 1937, American Sylvan Goldman invented the first shopping cart, followed by shopping cart popular stores in various countries. In China, we are familiar with the "American shopping cart" represented by "Walmart" and
of basic medical insurance within the year of employment (from January 1, January 1-12 to the 31st) exceeds 2000 RMB; 2. Settlement ratio. During the contract period, a total of more than 2000 yuan of dispatched personnel will be reimbursed for 50% of the total amount, and an individual will pay 50% of the total amount of reimbursement for dispatched personnel and emergency department will be paid within one year. The maximum amount is 20 thousand yu
Put the Advertising Alliance link in the Forum, blog, QQ, mail, website and other places after others click or recharge in accordance with one of your requirements of the settlement, a monthly settlement, if the amount is less than 100 yuan, then accumulated to the next month settlement.
The settlement method is divid
series, and Windows NT. The NETBEUI protocol is useful in many cases. It is the default protocol of the operating system before Windows 98. The NetBEUI protocol is a short and concise broadcast protocol with high communication efficiency. It does not need to be set after installation. It is especially suitable for transmitting data in "Network neighbors. In addition to the TCP/IP protocol, it is recommended that the NetBEUI protocol be installed on computers in Small Lan. Note that if you want
specifies the format required for communication and the meaning of these formats. most networks adopt a layered architecture. Each layer is built on its lower layer to provide certain services to its upper layer, the details of how to implement this service are shielded from the new balance 576 shoes on the previous layer. the rules for communication between layer n on one device and layer n on the other device are layer n protocol. there are many protocols in each layer of the network. The pro
requirements of the current and foreseeable next stages.
Due to the differences between SoftSwitch and traditional exchange platforms, value-added services on the softswitch platform will inevitably emerge one after another, and value-added services on the softswitch platform will also be more diversified to support these value-added services, OSS should fully consider the integration with the original business in terms of design, through the flexible database and table structure design of the
department name of Department 10, even if there is no employee in department 10, the names of all departments of Department 10 must also be displayed, and the department names are in the dept table. Therefore, the dept table is placed on the left. The first three rows with matching data are the data found when Join is used, that is, the data that meets the On condition.
The result is as follows:
Note: My personal understanding about left join
Assume that you have two tables, capital
Yesterday in the group chat with the big guy, talking about ordinary bridge need not settlement observation, at that time I was thinking, the drawings are definitely not clearly stated. I think it is according to the corresponding norms, or to do some information good, to do a material (even if the material is compiled) No data is in trouble is your business.
"Running Pole" Zen Enlightenment (2761622508) 17:15:28 ask you, General H
The mall uses the payment interface to obtain the user address. In the mall, you can use the payment interface to get the user address. in the mall, the author is not as good as the author is to get the user address by using the payment interface.
It is better to teach people to fish than to teach them to fish.
Get user address for payment
The address information obtained is applied together with the payment. you can use this function after the payment application is approved.
In the mall, usin
the update range of the expense statement list. Between the two filters, transaction A commits A new expense detail data, resulting in inconsistent results of the two filters. To avoid this problem, we still need to implement the "read only once" principle, or, in a broader sense, "only determine the filtering range once ". There are roughly two methods. You can read the qualified expense details and save them to a list. Statistics and updates are limited to the data in this list. The followin
length value if (b 5, RMB to capitalize the number/* "The basic rules for the correct filling of notes and settlement vouchers" the various bills and settlement vouchers filled by banks, units and individuals are the important basis for payment settlement and cash receipt and payment, which is directly related to the accurate, timely and safe
) |--Order Payment ticket (OUT_TRADE_NO/ESCROW_TRADE_NO, third party payment serial number) |--creation time (next order) |--payment Time |--Delivery time |--customer number (user_id, User table AutoNumber) |--Customer Comments |--Order settlement status (order_settlement_status, cod, installments) |--order settlement time (order_settlement_time) Order invoice Form (Order_invoice)|--automatic numbe
PHP: how to create a file and write text? I want to encapsulate a method to create a file and write two width and height parameters to the text.
Effect after implementation
For example, 100 300
The generated file name is s 100300. less.
The content is
@ Import "shiying ";
@ Screen_width: 100px;
@ Screen_height: 300px;
How to write this function .. Red must match
Reply to discussion (solution)
function mkless($width, $height) { $r[] = '@import "shiying";'; $r[] = sprintf('@scre
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