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Oracle DBA Objects Explained!

 


DBA_OBJECTS is an Oracle data dictionary view that lists every object in the entire database — tables, views, indexes, sequences, procedures, packages, triggers, synonyms, etc. — across all schemas and all these were managed by DBA.

Core Oracle database objects

Object

Purpose

Table

Stores application data in rows and columns

Index

Improves query performance by providing faster access paths

View

Virtual table based on a SQL query

Materialized View

Stores the result of a query physically and can be refreshed

Sequence

Generates unique numeric values, commonly for primary keys

Synonym

Provides an alternate name for another object

Database Link

Allows SQL access to objects in another Oracle database

User / Schema

A user owns a schema containing database objects

Procedure

Stored PL/SQL program used to perform operations

Function

Stored PL/SQL program that returns a value

Package

Groups related procedures, functions, variables, and types

Trigger

Automatically executes PL/SQL in response to events

Constraint

Enforces data integrity, e.g. PK, FK, UNIQUE, CHECK

Type

Defines custom SQL/PLSQL data types

Directory

Database object pointing to an OS directory, often used with external files

DBMS Scheduler Job

Automates recurring database tasks


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