Describe drop table command or cascade of sql, Database Management System

Assignment Help:

Describe DROP TABLE command of SQL along with both the options - CASCADE and RESTRICT.

DROP TABLE command - This command drops the specified table. Dropping a table also drops indexes and grants related with it. Objects built on dropped tables are marked invalid and cease to work.

CASCADE and RESTRICT options - The DROP TABLE with RESTRICT option destroy the table unless a few view or integrity constraint refer to the given table; if so, the command fails. Other than along with the CASCADE option, any referencing views or integrity constraints are (recursively) dropped as well.


Related Discussions:- Describe drop table command or cascade of sql

Mapping, How external/conceptual mapping and conceptual /internal mapping i...

How external/conceptual mapping and conceptual /internal mapping is performed

Memory components of sga, Problem 1. Describe the Oracle Architecture w...

Problem 1. Describe the Oracle Architecture with a neat labeled diagram, Also explain the individual components of the Architecture. 2. Write about the following Oracle 9i o

Microeconomic, anyone have a textbook solutions case fair, 8 edition of vo...

anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me

Explain the term- data flows, Explain the term- Data Flows Data Flows:...

Explain the term- Data Flows Data Flows: A data flow connects output of an object or process to input of another process or object. It represents an in-between data value wit

Improved performance, Improved performance: As the data is located near the...

Improved performance: As the data is located near the site of its demand, and given the inherent parallelism because of multiple copies, speed of database access may be good for di

Illustrate system design of an object oriented approach, System Design: An ...

System Design: An Object Oriented Approach Any software systems always try to change and evolve as technology and business rules evolve. The development of information systems

Explain the acid properties of a transaction, Explain the ACID properties o...

Explain the ACID properties of a transaction Ans: ACID properties are a significant concept for databases. The ACID stands for Atomicity, Consistency, Isolation, and Durability

Database security, Ask questiwhat is row indicator in database on #Minimum...

Ask questiwhat is row indicator in database on #Minimum 100 words accepted#

Explain the structure of well formed formulae, Explain the structure of wel...

Explain the structure of well formed formulae in relational calculus. Ans: a. An atom is a formula b. If P1 is a formula, after that so are ¬P1 and (P1) c. If P1 and P2 a

Descrine an data dictionary, Describe an data dictionary? A data dictio...

Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.

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