Microsoft's thinking about OLE DB and. NET
You and I are not acquainted. But in the face of a real problem, "What is software?" "I don't have the right answer," he said.
Imagine a scene where you're concentrating on buying useless things (mainly
In some cases, you need to associate different databases for Data Query and operations.
In Oracle, database links are used to associate tables with different databases ).
There are two ways to create a DB link: Creating an SQL statement and creating
Thinking about OLE DB and. NET
You and I are not acquainted. But in the face of a real problem, "What is software?" "I don't have the right answer," he said.
Imagine a scene where you're concentrating on buying useless things (mainly souvenirs) in
Encapsulate your own DB Class (PHP) and db Class php. Encapsulate your own DB Class (PHP). encapsulate db Class php to encapsulate a DB class for special database operations. any operations on the database in the future will be implemented by DB
Encapsulate your own DB Class (PHP), Encapsulate DB class PHP
encapsulates a DB class, which is used to operate the database specifically, and subsequent operations on the database are implemented by the DB Class object. This has its own DB class,
Multiple Oracle databases physically stored in the network can be logically considered as a single large database. Users can access the data in the remote database through the network, while the collaborative processing between servers
It is
OracleHow to Create a databaseDATABASE LINKWhat about it? In this article, we will use an instance to introduce the creation process. Next, let's take a look at this process.
Multiple ORACLE databases physically stored in the network can be
Multiple Oracle databases physically stored in the network can be logically considered as a single large database. Users can access the data in the remote database through the network, the collaborative processing between servers is completely
Links between databases are built on database link. To create a DB link, you must first set up the link string on each database server.
1, configure TNS, $ORACLE _home/network/admin/tnsname.ora
10gstandby =
(DESCRIPTION =
(address = (PROTOCOL =
The links between databases are established on the database link. To create a DB link, you must first set the link string on each database server.
1. Configure TNS, $ ORACLE_HOME/Network/admin/tnsname. ora
10 gstandby =
(Description =
(Address =
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