GeekInterview.com
   Home |  Tech FAQ  |   Interview Questions |  Placement Papers |  Tech Articles |  Learn |  Freelance Projects |  Online Testing |  Geeks Talk |  Job Postings |  Knowledge Base | Site Search |  Add/Ask Question

GeekInterview.com  >  Tech FAQs  >  Database
Go To First  |  Previous Question  |  Next Question 
 Database  |  Question 98 of 117    Print  
DDL and DML
Why do we need a DDL and DML in a database system?


  
Total Answers and Comments: 2 Last Update: May 05, 2008     Asked by: abdulx 
  
 Sponsored Links

 
 Best Rated Answer

No best answer available. Please pick the good answer available or submit your answer.
January 25, 2008 05:35:11   #1  
ugly1 Member Since: January 2008   Contribution: 3    

RE: DDL and DML

DDL stands for data definition language and DML stands for data manipulation language.

DML changes data in an object (eg-insert,update,delete) and when we create,change or remove a database object thats DML (eg-create). so both are important.


 
Is this answer useful? Yes | No
May 05, 2008 02:06:25   #2  
laikka_buddy Member Since: May 2008   Contribution: 3    

RE: DDL and DML
DDL  is  nothing   but   Data  Definition  Language .  It is very important for a  dadabase that we have to  define  the data   such that  we can  create tables , alter tables, truncate  and  drop  tables
 
Is this answer useful? Yes | No

 Related Questions


 Sponsored Links

 
Related Articles

Using XMLType for Handling XML Data in the Database

Using XMLType for Handling XML Data in the Database Being an object type XMLType can not only be used to store XML data in the database but also to operate on that data via its built in methods Regardless of the storage model you choose XMLType provides a set of XML specific methods to operate on XM
 

Using Oracle Database for Storing, Modifying, and Retrieving XML Data

Using Oracle Database for Storing Modifying and Retrieving XML Data With Oracle XML DB you have various XML storage and XML processing options allowing you to achieve the required level of performance and scalability One of the most interesting things about Oracle XML DB is that it allows you to per
 

Performing XSLT Transformations inside the Database

Performing XSLT Transformations inside the Database Now that you have the employees XSL stylesheet stored in the database and the xmlusr schema is permitted to access the hr employees table you can create a script that will instruct the database to build an HTML page based on the data stored in hr e
 

Moving All the XML Processing into the Database

Moving All the XML Processing into the Database In the preceding example the database server performs only a part of the XML processing while the rest is still performed by the PHP engine Specifically the database server generates an employees XML document based on the records from the hr employees
 

Performing XML Processing inside the Database

Performing XML Processing inside the Database When building XML enabled applications on top of Oracle there are many advantages to performing the XML processing inside the database when compared to performing it on the client The key advantages to perform XML processing inside the database are as fo
 

What is Operational Database

Operational Database is the database-of-record, consisting of system-specific reference data and event data belonging to a transaction-update system. It may also contain system control data such as indicators, flags, and counters. The operational database is the source of data for the data warehouse
 

Evolution of database systems

The Evolution of Database systems File Management System Hierarchical database System  Network Database System  Relational Database System File Management System: The file management system also called as FMS in short is one in which all data is stored on a singl
 

Database Concurrency and Reliability

Database Concurrency and Reliability Overview Concurrency and reliability have long been “hot topics” of discussion among developers and users of distributed systems. The fundamental problem can be seen in a simple example, as follows. Suppose two users are working on the same
 

Database Interaction

Database Interaction Efficient interaction, efficient storage, and efficient processing are the three key properties of a successful database platform. In this article, we explore the first: efficient interaction. Interaction Category 1: Command Line Clients Many database platforms are shipped with
 

Database Systems

Early Databases In the 1960s, the System Development Corporation, one of the world’s first computer software companies and a significant military technology contractor, first used the term “data base” to describe a system to manage United States Air Force personnel. The
 





About Us  |   Privacy Policy  |   Terms and Conditions  |   Contact  |   Site Map  |   Add Question  |   Propose Category  |   RSS Feeds  |   Articles Sitemap  |   Site Updates  |   Add Resource

Copyright © 2005 - 2008 GeekInterview.com. All Rights Reserved
Page copy protected against web site content infringement by Copyscape