There are many interfaces in the current project, the data source may be different database or different users of the table, to access the table caused a certain amount of trouble. This time you can use synonyms to simplify.
The syntax for synonyms is: CREATE [OR REPLACE] [public] synonym [schema.] Synonym name for [schema.] Object [@dblink];
You also need assignment-related permissions when you create syno
Oracle Database SYNONYM (SYNONYM) Usage
This tutorial uses examples to illustrate how to create and delete Synonyms (SYNONYM) in Oracle Data ).
Concept
Synonyms refer to database objects (tables, views, sequences, stored procedures, and other database objects) referenced by another name. For example:
Creating a synonym
Tags: OCA must rom off system rtx syn change fromSynonyms: A synonym is an alias to another data object, the synonym is dependent on its target object, and the synonym becomes invalid if the target object is changed or deleted. Synonyms are not a substitute for the privileges of database objects, that is, the object with the schema is queried, executed, deleted,
It used to be that the synonym (synonym) in SQL Server was useless, so it never looked up its syntax format. Today, there is a problem, with synonym to solve the better. The problem is that I use multiple databases in my system, and because some of the data in each database needs to be synchronized, I add triggers to the tables in one of those databases to synchr
In today's era of information technology, almost everything we do is inseparable from the Internet, and the security of websites is becoming increasingly important. Websites that contain malware often cause problems with users' computers, leakage of credit cards or bank account numbers, and even theft of their identities, resulting in countless financial losses. Google has been committed to protecting users from being linked to websites that spread
You can use multiple methods to back up synonyms. For example, you can use a script to generate a creation script for synonyms or use dbms_metadata.get_ddl to extract definition scripts for synonyms. However, when using the traditional exp or DataPump expdp for schema-level data migration, public synonyms cannot be exported. However, we can still use the Export and Import method. The difference is that we use the full = y method to export the synonym
1. Why use Synonyms:
Synonyms, as the name implies, mean that two words share the same meaning and can be replaced with each other. What are their functions:
A's most obvious goal is to simplify SQL. If the name of a database object is too long, you can create a shorter synonym, which is equivalent to the abbreviation.
B. another purpose is to hide the information of some objects. for example, to search for a table in another schema, you must add the
Production Company: EMCO (http://www.emco.is /)
Version no.: 3.5.9.18
Size: 28.28 MB
License Agreement: free
System Information: Windows 95/98/ME/NT/2000/XP/2003/Vista
: Http://emco.is/download/malwaredestroyer/malwaredestroyersetup.exe
Screen: http://www.emco.is/malwaredestroyer/screenshots.html
Software introduction (from developers ):
Malware destroyer is a malware cleanup tool with the latest sc
Oracle _ sequence, index, synonym, oracle SynonymZookeeper
1. Sequence1. sequence: database objects that can be used by multiple users to generate unique valuesUnique value automatically providedShared objectIt is mainly used to provide the primary key value.Loading Sequence values into memory improves access efficiency
2. create sequence statementCreate sequence sequence[Increment by n] -- the value of each increase[Start with n] -- START from[{MAXVA
Set synonyms for ease of use Select * from EMP; and so on are used for select * from ABC; Create a common synonymIf the user's level is not enough to establish a public synonym, You can authorize it under system: Grant create any synonym to Scott;Grant create public synonym to Scott; Cancel authorization: Revoke create any synoym from Scott;Revoke create public s
As a network administrator, malware analysis may not be our main job. However, if a malware affects the use of your desktop application, you may consider the nature of this unfamiliar malicious code. In general, starting your investigation with behavioral analysis, which is to observe how malware affects file systems, registries, and networks, can quickly produce
Follow this six-step malware response plan
Follow the six-step malware response plan
By Michael Mullins ccna, MCPBy Michael MullinsTranslation:Endurer
Tags:Security threats | viruses and worms | spyware/adware | Security ManagementTags: security threats | viruses and worms | spyware/advertising software | Security Management
Takeaway:Sometimes all the preventive care in the world won't protect your systems
2015 Android malware Threat Report-threats caused by Android ransomware and SMS Trojans
Previous LinkPopular Android malware family in the second half of 2015
Some of the most popular global malware families were reported during the second half of the year to steal device data through ransomware, SMS sending applications, and Trojans. The overall perception of H
Set synonyms to facilitate the use of select * fromemp; and so on for select * fromabc; create a common synonym if the user level is not enough to create a public synonym, you can
Set synonyms to make it easy to use select * from emp; and so on for select * from abc; create a common synonym. If the user level is insufficient, create a public
Set synonyms for ease of useSelect * from emp; and so on are used for select * from abc;Create a common synonymIf the user's level is not enough to establish a public synonym, You can authorize it under system:Grant create any synonym to scott;Grant create public synonym to scott;Cancel authorization:Revoke create any synoym from scott;Revoke create public synoym
In the previous article, we gave a general introduction to the four software involved in this test. Which of them will have better overall performance? Let's start a brutal practical test!
Who treats rogue software the most-clear and unmount capabilities
An excellent anti-rogue software not only can detect malicious programs in the system, but also depends on its ability to deal with hooligans. Otherwise, everything will be empty talk. Next let's take a look at the performance of the four soft
Where to detect malwareMost people in the industry are used to believing that anti-malware needs to run directly on terminal devices. Based on compliance requirements, many enterprises are forced to adopt this deployment mode, that is, running anti-malware on each Windows Device. As Mac and Linux are accelerated to enterprise desktops and data centers, anti-malware
Rootkit is a special malware, its function is in the installation target hidden itself and designated files, processes and network links and other information, rootkit generally and Trojans, backdoor and other malicious programs in conjunction with the use. Rootkit by loading a special driver, modify the system kernel, and then achieve the purpose of hiding information.
Windows Vista's own malware protectio
Linux Malware detection tool and Anti-Virus engine ClamAV installation tutorial
Malware is any software program designed to interfere with or damage the normal operation of the computing system. Although the most notorious malware include viruses, spyware, and advertising software, their attempts do not cause the same harm: Some steal private information, some de
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.