ddl stands for Data Definaton Language.Eg:- Create ,Alter .Drop.Truncate
Why we have called it as DDL means.... we are defining or acting at structure level. Say, when ever you create a table we are dealing at strucutre level. Hence its is DDL
sample of an explanation letter
data manipulation language, belongs to databases and sql. queries like insert/update/delete. in contrast, queries like create/alter/drop are called ddl (data definition language)
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DDL stands for Data Definition Language, and so it follows that creating a table is DDL, creating a view is DDL and so on.
Full form of the DDL is Data Definition Language.
ddl: data definition languagedml: data manipulation language
DDL compiler is the compiler whose job is to convert high level commands to low level commands..
forshared
no, they are free
Some of the operations performed in DDL in sql are creation of table,alteration of table,truncate a table, drop a table
There are number of commands in database (SQL) that are used to control , manipulate , retrieve data. One such command is DDL which is used for defining the schema of database.
The basic difference between DDL and DML is the commands they provide . The DDL provides statement for the creation and deletion of tables, indexes, views etc. while the DML provides statements to enter, update, delete and perform complex queries on these tables.
The differences between them you can get from, http://arjudba.blogspot.com/2008/04/what-are-difference-between-ddl-dml-and.html
Details is discussed on http://arjudba.blogspot.com/2008/04/what-are-difference-between-ddl-dml-and.html
DML