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In relational database when two tables have common field the link between tables is know as a hyperlink?

Actually, in a relational database, when two tables have a common field, the relationship between the tables is known as a foreign key constraint. This constraint ensures that values in the common field of one table correspond to values in another table, helping maintain data integrity and enabling queries across related tables.


How do you link two tables that are in the same database?

You can link them using Keys. You have different kinds of keys like Foreign key, super key etc. Foreign key - a foreign key (FK) is a field or group of fields in a database record that points to a key field or group of fields forming a key of another database record in some (usually different) table. Usually a foreign key in one table refers to the primary key (PK) of another table. This way references can be made to link information together and it is an essential part of database normalization Superkey - A superkey is defined in the relational model as a set of attributes of a relation variable (relvar) for which it holds that in all relations assigned to that variable there are no two distinct tuples (rows) that have the same values for the attributes in this set. Equivalently a superkey can also be defined as a set of attributes of a relvar upon which all attributes of the relvar are functionally dependent.


Why data integrity is important to a database?

The data integrity is important in a database because it assures that all data in it can be traced and link to other data. This ensures that all the data can be searched and recover. It increases the stability , the performance and the reliability of a database.


What is the first step OSPF and IS-IS routers take in building a shortest path first database?

The first step OSPF and IS-IS routers take in building a shortest path first database is to exchange link-state advertisements (LSAs) or link-state packets (LSPs) with neighboring routers. These packets contain information about the router's directly connected neighbors and the state of their links.


A database is made up of related?

A database is made up of related Schemas and Tables. A single database can have multiple schemas and each schema can have multiple tables inside it. All of these can be related to one another using referential constraints like foreign keys.

Related Questions

How do you create a database link?

In order to create a database link, the command CREATE DATABASE LINK is used. Depending on the requirement, private or public databases may be created.


How do you create a database?

In order to create a database link, the command CREATE DATABASE LINK is used. Depending on the requirement, private or public databases may be created.


What is HR-index?

There is a index hr and it is a website. Here is the link http://www.index.hr/ HR Index is another website which shows Human Resources issues. Here is the link http://www.hr.unimelb.edu.au/hr-index/


What is bubl link in library science?

It is a Database.


How do you give the link to view database?

by putting your ---- in it


Do books have a Digital Object Identifier (DOI)?

Yes, books can have a Digital Object Identifier (DOI), which is a unique alphanumeric code assigned to identify and provide a permanent link to a specific publication.


Do textbooks have a DOI (Digital Object Identifier)?

Yes, textbooks can have a DOI (Digital Object Identifier), which is a unique alphanumeric code assigned to digital content to provide a persistent link to the source.


What is the recipe for Nakishka of Cory in the house?

This is a link to a way to make it: http://answers.yahoo.com/question/index?qid=20071013210353AAxX7pR This is a link to a way to make it: http://answers.yahoo.com/question/index?qid=20071013210353AAxX7pR This is a link to a way to make it: http://answers.yahoo.com/question/index?qid=20071013210353AAxX7pR


What is network database?

We know a database is one that stores data related to each other. A network database is just like network database only difference between them is, in network database records are connected by means of a link.


What is another attempt to provide stable-long lasting link for online articles?

A Digital Object Identifier (DOI).


How do you handle database in php?

Please refer link. The presentation gives complete understanding of how to deal with database (Mysql) with php.


Which primary link lead you to a link for the free resource called literary index?

Title List