DBMS (Database Management System): Database management is a collection of programs otherwise it is known as database software programs. The DBMS acts as an intermediate between the user and the database. This DBMS allows the users to access, modify and update the data in the database. More...
All changes are shown in bold. For Example BEGIN SELECT first_name, last_name INTO v_first_name, v_last_name FROM student WHERE student_id = 123; DBMS_OUTPUT.PUT_LINE ('Student name: '||v_first_name||' '|| v_last_name); EXCEPTION WHEN NO_DATA_FOUND THEN DBMS_OUTPUT.PUT_LINE ...
The views complete guide would explain the concepts and usage of views in SQL. Creating and Managing Views: Learn how to create and manage views effectively. Updatable vs Non-updatable Views: Difference between updatable and non-updatable views. Advantages of Views: Explain the advantages of implem...
Oracle Database Concepts Ensure that the recovery catalog and target database do not reside on the same disk. Uppercase monospace typeface indicates elements supplied by the system. Such elements include parameters, privileges, datatypes, RMAN keywords, SQL keywords, SQL*Plus or utility commands, ...
In this tutorial you will learn all the concepts related to pl/sql, in will the topics listed are: procedures, triggers, packages etc,
A Relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd in 1970.Advertisement - This is a modal window. No compatible source was found for this media....
It does, however, illustrate the concepts of this package. The DEMO procedure deletes all of the employees from the EMP table whose salaries are greater than the salary that you specify when you run DEMO. CREATE OR REPLACE PROCEDURE demo(salary IN NUMBER) AS cursor_name INTEGER; rows_...
As the world is progressing towards digitalization, most companies are now data-driven. The huge amount of data they collect is stored in a database. The management, analysis, and processing of this data is made through a DBMS(Database Management System). As a consequence of this shift, dat...
select * from productswhere quantity_in_stock in (49, 38, 72) BETWEEN运算符 用于表达范围型条件 用AND而非括号闭区间,包含两端点也可用于日期,毕竟日期本质也是数值,日期也有大小(早晚),可比较运算 选出积分在1k到3k的顾客 : USE sql_store;
This topic covers the main Oracle SQL Developer concepts, and explains how to use the major SQL Developer features.