Difference between user and schema oracle?

Answer 1

Well, darling, in Oracle, a user is an account used to log in and access the database, while a schema is a collection of database objects (tables, views, etc.) associated with a particular user. So, think of a user as the key to the front door, and a schema as the fancy furniture and decor inside the house. You can have multiple schemas in a single user account, just like you can have multiple rooms in a house. Easy peasy lemon squeezy!

Answer 2

Oh, dude, it's like this - a user in Oracle is like a person with a username and password to access the database, while a schema is like a container for database objects owned by a user. So, basically, a user is like your key to the database, and a schema is like your organized filing cabinet within that database. Cool, right?

Answer 3

The both words user and schema are interchangeble,thats why most people get confusion on this words.Below i explained the difference between them

--User
User is a account to connect database(Server). we can create user by using CREATE USER user_name IDENTIFIED BY password.

--Schema

Actually Oracle Database contain logical and physical strucutre to process the data.The Schema Also Logical Structure to process the data in Database(Memory Component). Its Created automatically by oracle when user created.It Contains All Objects created by the user associated to that schema.For Example if i created a user with name santhosh then oracle createts a schema called santhosh,oracle stores all objects created by user santhosh in santhosh schema.

We can create schema by CREATE SCHEMA statement ,but Oracle Automatically create a user for that schema.

We can Drop the schema by using DROP SCHEMA schema_name RESTRICT statement but it can not delete scehema contains objects,so to drop schema it must be empty.here the restrict word forcely specify that schema with out objects.

If we try to drop a user contain objects in his schema we must specify CASCADE word because oracle does not allow you to delete user contain objects. DROP USER user_name CASCADE so oracle deletes the objects in schema and then it drops the user automatically,Objects refered to this schema objects from other schema like views and private synonyms goes to invalid state.