What is user defined functions in Oracle?

What is user defined functions in Oracle?

Purpose. The User Defined Function masking format lets you define your own logic to mask column data. The return value of the user-defined function is used to replace the original values. The user-defined function is a PL/SQL function that can be invoked in a SELECT statement.

How do I give a user a DBA in Oracle?

Steps

1. Log in to SQL *Plus: sqlplus ‘/ as sysdba’
2. Create a new user with an administrator password: create user user_name identified by admin_password ;
3. Assign the sysdba privilege to the new Oracle user: grant sysdba to user_name ;

What are tables in Oracle?

Tables are the basic unit of data storage in an Oracle Database. Data is stored in rows and columns. You define a table with a table name, such as employees , and a set of columns.

What are V$ views in Oracle?

7.1. 1 V$ Views The actual dynamic performance views are identified by the prefix V_$ . The dynamic performance views are used by Oracle Enterprise Manager, which is the primary interface for accessing information about system performance. After an instance is started, the V$ views that read from memory are accessible.

What is user-defined function with example?

A function is a block of code that performs a specific task. C allows you to define functions according to your need. These functions are known as user-defined functions. For example: Suppose, you need to create a circle and color it depending upon the radius and color.

What are user-defined data types?

A user-defined data type (UDT) is a data type that derived from an existing data type. You can use UDTs to extend the built-in types already available and create your own customized data types.

How do I grant a DBA user?

Once connected as SYSTEM , simply issue the CREATE USER command to generate a new account.

1. CREATE USER books_admin IDENTIFIED BY MyPassword;
2. GRANT CONNECT TO books_admin;
3. GRANT CONNECT, RESOURCE, DBA TO books_admin;
4. GRANT CREATE SESSION GRANT ANY PRIVILEGE TO books_admin;
5. GRANT UNLIMITED TABLESPACE TO books_admin;

What is select any table privilege in Oracle?

SELECT ANY TABLE is a system privilege that allows the grantee to: Query tables, views, or materialized views in any schema except SYS . Obtain row locks using a SELECT FOR UPDATE . When you grant that it is a standalone single privilege, visible in dba_sys_privs .

How are user defined tables different from database tables?

Using Oracle FastFormula, you can write simple formulas for validating entries made in table columns. Notice that the Oracle HRMS user-defined tables are different from the database tables of the Oracle Relational Database Management System. When you set up a user table, you define the rows as well as the columns, like a matrix.

What does DBA _ users mean in Oracle Database?

DBA_USERS describes all users of the database. USER_USERS describes the current user. This view does not display the PASSWORD, PROFILE, PASSWORD_VERSIONS, EDITIONS_ENABLED, AUTHENTICATION_TYPE , and LAST_LOGIN columns.

What can you do with a PL / SQL table?

They can store columns or rows of Oracle data, and they can be passed as parameters. So, PL/SQL tables make it easy to move collections of data into and out of database tables or between client-side applications and stored subprograms. You can even use PL/SQL tables of records to simulate local database tables.

What does the get table value function do in HRMS?

Table entries and rows are both datetracked, so you can delete existing entries or rows, and add new ones, as of an effective date. Oracle HRMS provides the GET_TABLE_VALUE function to access table values.