Introduction User

 

                                             

                                       

                                       

Introduction

In any case 

Use the CREATE USER statement to create and set up a database user, which is a standard account that you can log into to the database, and to establish the standard ways in which Oracle Database allows standard user access. 

You can publish this guidance in an automatic storage management bunch to add a user combination and saying of antiquated to the old fashioned saying file that is neighborhood to the ASM instance of the current node. The ASM instance of each node can use this guidance to update old fashioned's own witticism file. The antiquated quip file itself must have been created standard orAPWD utility. 

You can allow a user to log into the database by means of an intermediary application or application server. For syntax and conversation, see ALTER USER. 

Prerequisites 

You must have the privilege of the CREATE USER system. When you create a user with the CREATE USER statement, the user's privilege domain is empty. To connect to Oracle Database, a user must have the privilege of the CREATE SESSION system. Therefore, after creating a user, you must grant the user at least the privilege of the CREATE SESSION system. Check out GRANT for in addition to information. 

Only an authenticated AS SYSASM user can issue this command to edit the old fashioned auto storage instance witticism file.

Why do we need a database

Manages large amounts of data 

A database stores and manages a large amount of data on a daily basis. This would not be conceivable using another tool such as a vehicle spreadsheet they simply wouldn't work promote. 

Specific 

A database is fairly accurate vehicle it has all kinds of build in constraints, controls, and so forth This means that the information available in a database is guaranteed to be correct in most cases. 

Easy-to-update data 

In a database, it is effortless to update the data using jumpers data control languages (DML) available. One of these languages is SQL. 

Data security 

Databases have a variety of methods to ensure data security. There are user associations required before accessing a database and access-specifying jumpers. These only allow authorized users to access the database. 

Data Integrity 

This is ensured in databases using various constraints for data. The integrity of the data in the databases ensures that the data is accurate and consistent in a database. 

Easy-to-search data 

It is very easy to access and search for data in a database. This is done using data query languages (DQL) that allow the search of all data in the database and perform calculations on it.

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