Table of Contents
How do you know if a synonym is public or private?
If you are logged in as a particular user, then this will show all the synonymns private to the user. select * from user_synonyms; If you are looking for only public synonyms, this query may be close to what you are looking for. This would show synonyms on tables owned by system, sys etc.
What is synonym private Oracle?
A private synonym name must be unique in its schema. A private synonym is accessible to users other than the owner only if those users have appropriate privileges on the underlying database object and specify the schema along with the synonym name.
How synonyms are different from views in Oracle?
A view contains no data itself. The tables upon which a view is based are called base tables. Synonyms provide both data independence and location transparency.
How to rename private synonym in Oracle?
Use the ALTER SYNONYM statement to modify an existing synonym. To modify a private synonym in another user’s schema, you must have the CREATE ANY SYNONYM and DROP ANY SYNONYM system privileges. To modify a PUBLIC synonym, you must have the CREATE PUBLIC SYNONYM and DROP PUBLIC SYNONYM system privileges.
What is the difference between public and private synonym?
Public synonym: can be accessed by any user on the database. The user who creates the synonym it does not own it – it’s owned by the PUBLIC user group. Private synonym: can only be accessed by the person who created the synonym. This user is also the owner.
How do you check if a synonym is public or private in Oracle?
Oracle uses a public synonym only when resolving references to an object if the object is not prefaced by a schema and the object is not followed by a database link. If you omit this clause, the synonym is private and is accessible only within its schema. A private synonym name must be unique in its schema.
What is a private synonym in database?
A private synonym is a synonym within a database schema that a developer typically uses to mask the true name of a table, view stored procedure, or other database object in an application schema. Private synonyms, unlike public synonyms, can be referenced only by the schema that owns the table or object.
How do I grant a public synonym privilege in Oracle?
You grant privileges to create, alter, and drop synonyms with the GRANT SYNONYM command. The syntax for the GRANT SYNONYM command is: GRANT [CREATE] SYNONYM TO user_or_group; GRANT ALTER, DROP ON synonym_name TO user_or_group; You revoke privileges to create, alter, and drop synonyms with the REVOKE SYNONYM command.
How to drop private synonym in Oracle?
To drop a private synonym, either the synonym must be in your own schema or you must have the DROP ANY SYNONYM system privilege. To drop a PUBLIC synonym, you must have the DROP PUBLIC SYNONYM system privilege. You must specify PUBLIC to drop a public synonym. You cannot specify schema if you have specified PUBLIC .
What are the advantages of synonyms in Oracle?
Advantages of Using Synonyms You can create a synonym for an object in a schema, and use the synonym in your SQL statement to access the object. If you need to access the underlying object in a different schema, modify the definition of the synonym to point to the object in a different schema.
Can we create view on synonym in Oracle?
You can create a synonym for a table or a view that doesn’t exist, but the target table or view must be present before the synonym can be used. Synonyms share the same namespace as tables or views. You cannot create a synonym with the same name as a table that already exists in the same schema.
How to use Oracle synonyms?
- Synonym Name – Enter a name.
- Public or Private – Specify whether the synonym should be public or private.
- Schema – Select the database schema (or user name) which owns the object upon which you want to create your synonym.
- Object – Enter the name of the object upon which you want to create a synonym.
What is a synonym for personal or private?
On this page you’ll find 63 synonyms, antonyms, and words related to personal, such as: intimate, particular, secret, special, exclusive, and privy.
What is a synonym for say publicly?
Synonyms of publicly (adverb candidly) honestly. openly. plainly. aboveboard.
What is a synonym for showing to the public?
On this page you’ll find 448 synonyms, antonyms, and words related to make public, such as: broadcast, circulate, communicate, declare, disclose, and display.