Define the terms- ddl and dml, Database Management System

Assignment Help:

Define the terms

i) DDL

ii) DML

DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data definition language.

DML: A data manipulation language is a language that enables users to access or manipulate data as organized by the suitable data model.

Related Discussions:- Define the terms- ddl and dml

When is a transaction rolled back, When is a transaction rolled back? A...

When is a transaction rolled back? Any changes that the aborted transaction made to the database must be uncompleted. While the changes caused by an aborted transaction have be

Explain how the binary tree, QUESTION (a) Give two advantages of using ...

QUESTION (a) Give two advantages of using Linked List as compared to arrays. (b) (i) You are working as programmer at the Orange Mauritius branch. You have been asked to cre

Relational declarative database language environment, Server Control It ...

Server Control It is usual to control access to the data via the front end application, for example by displaying data as ‘read only'. This part of the assignment illustrates ho

Ldb hierarchy there should exist one get statement, It is mandatory that fo...

It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.

Mapping Constraints, what is Mapping Constraints? with examples

what is Mapping Constraints? with examples

List the reg-no of vehicles owned in relational algebra, Given the followin...

Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following

When is update_statistics command used, When is UPDATE_STATISTICS command u...

When is UPDATE_STATISTICS command used? - When processing of large data is done, this command is used. - Whenever large number of modification, deletions or copy takes place

Describe participation constraints, Describe Participation Constraints? ...

Describe Participation Constraints? Participation Constraints - The participation constraint exacts whether the existence of an entity depends on its being related to another

What is the difference between where and having clauses, What is the differ...

What is the difference between WHERE and HAVING clauses?. Predicates in the WHERE clause applies to every tuple while the predicate in the HAVING clause applies to groups.

Explain the term high level dml, Explain the term High level DML? High...

Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages