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Oracle synonym Creation (synonym) __oracle

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

How to easily master connected character sets and proofread _ MySQL

It helps you easily master connected character sets and proofread rule system variables, which are related to the interaction between the client and the server. Some content has been mentioned in the previous chapter: ? Server character sets and verification rules can be used as the value of character_set_server and collation_server variables. ? The character set and collation rules of the default database can be used as the values of character_set_d

Oracle Database SYNONYM (SYNONYM) Usage

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

Oracle synonym 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,

Usage of synonym synonym in SQL Server

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

Use DataPump to export the import synonym (export and import synonym using DataPump)

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

How do I use the Excel2010 reading function to proofread data?

1. Open the Excel form that needs to be proofread by reading aloud, first we have to make sure Excel2010 has not added the reading function, if not, click the "file" → "option" of the toolbar. 2. Select "Quick Access Toolbar" in the Excel option, then select "No commands in the Ribbon" 3. Then select "Press ENTER to start reading the cell" and click "Add" to confirm the final click. 4. After returning the document we select the

Synonym (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

Write your first Linux kernel module (currently proofread to miscellaneous devices)

() Gets the mutex and returns or sleeps the process until it is mutually exclusive. As before, the _interruptible suffix means sleep can interrupt the signal.while (buf->read_ptr = = buf->end) {Mutex_unlock (buf->lock);/* ... wait_event_interruptible () here ... */if (mutex_lock_interruptible (buf->lock)) {result =-erestartsys;Goto out;}}Here is our "Wait data" loop. You should not sleep when holding a mutex, or what might happen is called a "deadlock". So, if there is no data, we release the m

Oracle _ sequence, index, synonym, oracle Synonym

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

Synonym synonyms in oralce

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

Synonym synonyms in Oralce

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

Synonym synonyms in Oralce

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

Analysis of OCP question _ 007: Synonym

Analysis of OCP question _ 007: synonym synonyms are the alias of the base table. They are defined only in the data dictionary. They do not store synonyms. They provide location transparency for distributed databases. Accessing resources in different regions is just like accessing local resources. (I) Syntax:Private synonyms without public are the synonyms created by common users. They are private, this is because only the user who create

Oracle synonym learning

Oracle synonym learning. To create a synonym for a table on a remote database, you must first create a DatabaseLink (database connection) to expand Oracle synonym learning. To create a synonym for a table on a remote Database, you must first create a Database Link (Database connection) to expand

Analysis of OCP question _ 007: Synonym

Synonyms are the aliases of the base table. They are defined only in the data dictionary and are not stored. Synonyms provide location transparency for distributed databases, and there is no difference in accessing resources in different regions like accessing local resources. (I) syntax Syntax for creating Synonyms: Private synonyms without publicA private synonym is a synonym created by a common user

ORACLE synonyms (synonym) detailed

The following are organized from Oracle's official documentationA conceptA synonym is an alias for any table, view,materialized view, sequence, procedure, function, package, type, Java Classschem A object, User-defined object type, or another synonym. Because a synonymis simply an alias, it requires no storage other than its definition in Thedata dictionary.Synonyms in Oracle are aliases for any table, view

Use of PowerDesigner graphical synonym (graphical synonyms)

Concept A graphical synonym is a representation of an object (table), which itself has no specific definition. By graphically using synonyms, it is possible to use this object (table) in different places in the same physical diagram (physical diagram). Role: In the physical diagram between the relationship between the lines as far as possible, through the establishment of synonymous word image (graphical

Oracle note (13) view, synonym, Index

Oracle note (13) view, synonym, and index links: Oracle note (1) Oracle introduction and Installation ; Oracle notes (2) SQLPlus command Oracle note (3) Scott's table structure Oracle notes (4) simple query, restricted query, and data sorting Oracle notes (5)

Using Elasticsearch ik participle to implement synonym search

1, first need to install good elasticsearch and Elasticsearch-analysis-ik word breaker2. Configure IK synonymsThe Elasticsearch comes with a synonym filter named synonym. In order for IK and synonym to work together, we need to define a new analyzer and use IK as the tokenizer,synonym filter. It sounds complicated, but

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