What is Oracle dependency?

Oracle manages all local dependencies using the database’s internal dependency table, which keeps track of each schema object’s dependent objects. When a referenced object is modified, Oracle uses the depends-on table to identify dependent objects, which are then invalidated.

How do database triggers work?

A database trigger is special stored procedure that is run when specific actions occur within a database. Most triggers are defined to run when changes are made to a table’s data. Triggers can be defined to run instead of or after DML (Data Manipulation Language) actions such as INSERT, UPDATE, and DELETE.

How do I create a database link in Oracle?

Use the CREATE DATABASE LINK statement to create a database link. A database link is a schema object in one database that enables you to access objects on another database. The other database need not be an Oracle Database system. However, to access non-Oracle systems you must use Oracle Heterogeneous Services.

What is the difference between allall_dependencies and DBA_dependencies?

ALL_DEPENDENCIES describes dependencies between procedures, packages, functions, package bodies, and triggers accessible to the current user, including dependencies on views created without any database links. This view does not display the SCHEMAID column. DBA_DEPENDENCIES describes all dependencies between objects in the database.

How do I access non-Oracle Systems in Oracle?

However, to access non-Oracle systems you must use Oracle Heterogeneous Services. After you have created a database link, you can use it to refer to tables and views on the other database. In SQL statements, you can refer to a table or view on the other database by appending @dblink to the table or view name.

What is all_dependencies in Salesforce?

ALL_DEPENDENCIES. ALL_DEPENDENCIES describes dependencies between procedures, packages, functions, package bodies, and triggers accessible to the current user, including dependencies on views created without any database links. This view does not display the SCHEMAID column.