GeekInterview.com
  I am new, Sign me up!
 
GeekInterview.com  >  Interview Questions  >  Oracle  >  Concepts and Architecture
Go To First  |  Previous Question  |  Next Question 
 Concepts and Architecture  |  Question 54 of 74    Print  

Describe the different type of Integrity Constraints supported by ORACLE ?

NOT NULL Constraint - Disallows Nulls in a table's column.

UNIQUE Constraint - Disallows duplicate values in a column or set of columns.

PRIMARY KEY Constraint - Disallows duplicate values and Nulls in a column or set of columns.

FOREIGN KEY Constrain - Require each value in a column or set of columns match a value in a related table's UNIQUE or PRIMARY KEY.

CHECK Constraint - Disallows values that do not satisfy the logical expression of the constraint.




  
Total Answers and Comments: 0 Last Update: N/A   
  
 Sponsored Links

 

No answers are posted for this question yet.
Be the first to answer it!


 Related Questions

ORACLE database is comprised of three types of files. One or more Data files, two are more Redo Log files, and one or more Control files. 
Latest Answer : The components of a Physical Structure of a Database are as Follows:1.Control Files2.Redolog Files3.Data Files. ...
Tablespaces and the Database's Schema Objects. 
Latest Answer : Oracle Database has Physical and Logical Structure. In Logical Structure contains System tablespace and no of tablespace in database. these tablespace contains datafiles from physical database datafiles ...
Every ORACLE database contains a tablespace named SYSTEM, which is automatically created when the database is created. The SYSTEM tablespace always contains the data dictionary tables for the entire database. 
Latest Answer : Every Oracle Database contains a tablespace called system tablespace.This tablespace gets created at the time of database creation and it holds data dictionary information for the entire database. ...
A table is the basic unit of data storage in an ORACLE database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns. 
Latest Answer : Table is data base object which stores the data in the logical representatiom in form of rows n coluns which is existing in two dimension form... and is stored in the databse. ...
There are two types of Synonyms Private and Public. 
Indexes are automatically maintained and used by ORACLE. Changes to table data are automatically incorporated into all relevant indexes. 
Latest Answer : Index is a Database object . It can be accessed rows physical fast. when you move the table from different table spaces or same table spaces indexes will unusually status. So You compulsory rebuild the index. Rebuilding the index is very fast than drop ...
ORACLE database's data is stored in data blocks. One data block corresponds to a specific number of bytes of physical database space on disk. 
Latest Answer : Oracle Data Blocks is logical storage unit of Oracle and One Oracle Data Blocks containts multiple of Operating system Blocks. Data blocks contains contigous of Bytes. ...
A data block size is specified for each ORACLE database when the database is created. A database users and allocated free database space in ORACLE datablocks. Block size is specified in INIT.ORA file and 
Latest Answer : stansard block size, which is set with parameter DB_BLOCK_SIZE cannot be changed after creating database. We can set non standard parameter size later with parameter DB_nk_BLOCK_SIZE and it can be changed.NOTE: Standard block size cnannot be equal ...
An Extent is a specific number of contiguous data blocks, obtained in a single allocation, and used to store a specific type of information. 
Latest Answer : An extent is a logical unit of database storage space allocation made up of a number of contiguous data blocks. One or more extents in turn make up a segment. When the existing space in a segment is completely used, Oracle allocates a new extent for the ...
Data Segment, Index Segment, Rollback Segment and Temporary Segment. 
Latest Answer : Data, index , rollback, undo,cluster ...

 Sponsored Links

 
Related Articles

Querying Data with Oracle XQuery

Querying Data with Oracle XQuery Starting with Oracle Database 10g Release 2 you can take advantage of a full featured native XQuery engine integrated with the database With Oracle XQuery you can accomplish various tasks involved in developing PHP Oracle XML applications operating on any kind of dat
 

Using Oracle XML DB Repository

Using Oracle XML DB Repository Another variation on accessing and manipulating XML content stored in Oracle database is provided by Oracle XML DB repository which is an essential component of Oracle XML DB mosgoogle NOTE Oracle XML DB repository also known as XML repository is a hierarchically organ
 

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
 

XML Processing in PHP and Oracle Applications

Processing XML in PHP Oracle Applications As mentioned there are two alternatives when it comes to performing XML processing in your PHP Oracle application You can perform any required XML processing using either PHP s XML extensions or PEAR XML packages or Oracle s XML features mosgoogle In the fol
 

PHP Oracle Web Development

PHP Oracle Web Development Data processing Security Caching XML Web Services and Ajax The book is written by Yuli Vaseliev a well known author of different web development and programming books PHP Oracle Web Development Data processing Security Caching XML Web Services and Ajax is a good starting b
 

Getting Started with Oracle and ODP.NET

ODP NET Developer’ s Guide by Jagadish Chatarji Pulakhandam Sunitha Paruchuri A practical guide for developers working with the Oracle Data Provider for NET and the Oracle Developer Tools for Visual Studio 2005 Application development with ODP NET Dealing with XML DB using ODP NET Oracle
 

PHP Oracle Web Development Review

PHP Oracle Web Development Data processing Security Caching XML Web Services and Ajax The book is written by Yuli Vaseliev a well known author of different web development and programming books The author is also an expert in open source technologies and SOA Service Oriented Architecture But besides
 

Concepts of Object-Oriented Programming

Object Oriented JavaScript In this chapter you ll learn about OOP Object Oriented Programming and how it relates to JavaScript As an ASP NET developer you probably have some experience working with objects and you may even be familiar with concepts such as inheritance However unless you re already a
 

Step by Step Oracle PL-SQL Tutorial

This introductory tutorial to PL SQL will help you to understand the basic concepts of PL SQL Please review the following tutorials and practice the sample SQL Statements on your local Oracle Database Please note that you must learn these basic things before we actually start getting in to Advanced
 

N-Tier Architecture: Data Access Layer

N Tier Architecture Data Access Layer In an N Tier architecture the data access layer consists of components that aid one in the process of accessing the database When it is used correctly the data access layer serves as an abstract level for the structures of the database Simple changes that are ma
 

About Us -  Privacy Policy -  Terms and Conditions -  Contact -  Ask Question -  Propose Category -  Site Updates 

Copyright © 2005 - 2009 GeekInterview.com. All Rights Reserved

Page copy protected against web site content infringement by Copyscape