What is data definition language, Database Management System

Assignment Help:

What is data definition language? Explain it in detail?

The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing

a) The schema for each relation

b) The domain of values associated with each attribute

c) The integrity constraints

d) The set of indices to be maintained for each relation

e) The security and authorization information for each relation

f)  The physical storage structure of each relation on disk

  Domain Types in SQL

Char(n),

varchar(n), int, small int, numeric(p,d), real, double, precision,

f loat(n), date, time, timestamp.

Schema Definition in SQL

a) Primary key

b) Check

 


Related Discussions:- What is data definition language

What is a hashing function, What is a hashing function?  What are the prope...

What is a hashing function?  What are the properties of a good hashing function?  Describe the folding technique for hashing functions.      Ans:  Hashing function is a method

Mention the several levels in security measures, Mention the several levels...

Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human

Explain about data independence, Data Independence This brings us to ou...

Data Independence This brings us to our next topic: data independence. It is the property of the database which tries to make sure that if we make any change in any level of sc

Determine the types of methods for retrieving rows in python, Describe the ...

Describe the two types of methods for retrieving rows in Python? Fetchone()- Returns the next row as a sequence Fetch all()- Returns the entire result set like a strin

Why does a dbms query language is designed, Why does a DBMS query language ...

Why does a DBMS query language is designed? A DBMS query language is designed to support end users who use English-like commands. support in the development of complex applicat

Lock, intent locking

intent locking

Original Database, I need an ERD created for any original database(can be o...

I need an ERD created for any original database(can be on anything). It needs to be 3NF. I then need all the CREATE STATEMENTS, INSERT STATEMENTS(anything you can think of as long

I want to get database of a website, Project Description: I would like t...

Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd