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SQL - DDL,DML

DDL,DML

نویسنده :tamishan tamishan1
تاریخ:دوشنبه 6 آذر 1391-05:30 ب.ظ

SQL دارای دو زبانیست به نام های DML  ,  DDl .

DML :  Data Modification Language

DDL :  Data Definition Language

DDL : زبان تعریف داده ها

DML: زبان تغییر داده ها    

دستورات DML شامل : 

                      

SELECT

INSERT

UPDATE

DELETE

TRUNCATE

 

                                                                                                                                                                                                                          دستورات DDL شامل:

CREATE

ALTER

DROP

 

که از این 3 دستور برای کار با Data Base Objects  استفاده می کنیم.

Data Base Objects

Table

View

Trigger

.




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