The document discusses different types of queries in database management systems including select, parameter, crosstab, and action queries. It also discusses various query languages like QUEL, QBE, and SQL. SQL stands for Structured Query Language and has four main components - DQL for data queries, DDL for data definition, DML for data manipulation, and DCL for data control. Examples of queries in each of the SQL components are provided.

1. অধ্যায় ৬
ডেটাবেজ ম্যাবেজবম্ন্ট সিবেম্

2. ৬.৫ ড াবয়সি
অধ্যায় ৬
ডেটাবেজ ম্যাবেজবম্ন্ট সিবেম্

3.  Select query
 Parameter query
 Crosstab query
 Action query
Query

4. Query Language
QUEL – QUEry Language
QBE – Query By Example
SQL – Structured Query Language

5. SQL query
Union query
Pas-through query
Data definition query
Sub query

6. SQL – Structured Query Language
DQL – Data Query Language
DDL – Data Definition Language
DML – Data Manipulation Language
DCL – Data Control Language

7. DQL
SELECT Name, Address
FROM Student
WHERE Id=1;
DDL
CREATE TABLE Student(
Id NUMBER(10) NOT NULL,
Name VARCHAR(255) NOT NULL,
Address VARCHAR (255)
);

8. DML
INSERT INTO Customer
(ID,NAME,AGE,ADDRESS,SALARY)
VALUES
(1, 'Ramesh', 32, 'Ahmedabad', 2000.00 );
DELETE FROM Customer WHERE ID = 6;
UPDATE Customer SET ADDRESS = ‘Jamalpur'
WHERE ID = 6;

9. DCL

10. THANK YOU

11. Mohammad Ali Khan
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