The precondition for establishing a foreign key is that the column of this table must be the same as the foreign key type (the foreign key must be the outer primary key).
Foreign key effect: make two tables to form an association, foreign key can
Automatically generate class files based on the fields in Mysql:
But you need to import:
Require_once./db/ez_sql_core.php;Require_once./db/ez_sql_mysql.php;
Help Document: Http://jvmultimedia.com/docs/ezsql/ez_sql_help.htm
:
Core code:
Copy the
Data | Database First of all thanks to Csdn on the Djkhym (Hym), to my great help, drawing on his program of thought.
MARC (Machine readable catalogue) data, machine-readable directory data. The transformation of Marc format and database is an
Release date:Updated on:
Affected Systems:Perl MARC: File: XML 1.xDescription:--------------------------------------------------------------------------------CVE (CAN) ID: CVE-2014-1626
Perl is a high-level, general, literal, and dynamic
Read expected data from the data area by analyzing the directory address area
This method can read Marc in ISO format and Marc in TXT format.
Code
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Read, it is divided into two steps, one read, one take.
Read: The Marc file is a text in. ISO format. Each record is a branch and has a terminator CHR (29 ). Therefore, you can read data in one row.
Obtain: first obtain the information of the
In the history of the World Cup, this team was the most successful and won six victories. In a speech by Marc Lammers, head coach of the Dutch women's volleyball team, I realized why this team achieved such remarkable achievements. Their success is
Inventory management is the focus of MM module application, SAP in the receiving, sales, inventory, allocation and other operations have a direct impact on the current inventory. SAP provides standard functionality MB52 for inventory counts, but MB52
Roy Tennant once again described the complexity of Marc in Library Journal, and called for the standard to die seven years ago. Marc is a data format standard in the library field that has been in the history for more than 30 years. The following is
When I was studying vim, I found such a mistake. Could not find the pathogen color, the error is:
E185:cannot Find color scheme ' solarized '
How to solve the problem for Google is to find the answer:Solution:
CP
As a famous finite element software, Marc has a very strong non-linear computing power, and MSC has changed its interface after MARC2010, on the one hand, it expands its function, on the other hand, it changes the style of Marc's classic interface,
MSC. Simufact. Welding. V5.0 simulation SoftwareSimufact simulation software is a large and complex software, covering a wide range of functions, in order to provide users with the best solution, simufact and other software companies to take the
The He YiLinks: https://www.zhihu.com/question/20679872/answer/65565699Source: KnowCopyright belongs to the author, please contact the author for authorization.To understand this problem, you first need to know"Yuan"What is it.Yuan (meta), which is
Original post address: http://abaper.blogbus.com/logs/2705034.html
First look at the following two procedures. Which one do you think is faster?Data Definition and extraction:Data: Begin of it_marc occurs 0,Matnr like Marc-matnr,Werks like
Http://www.isi.edu/nsnam/ns/tutorial/
1. The following table shows the approximate ing between ns2-and TCP/IP and OSI Layer-7 network structures (this table is very helpful)
TCP
NS2.
OSI
Application Layer
Application
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