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  1. #31
    Senior Member
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    Kolkata
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    Re: What is a FOREIGN KEY ?

    A foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table.

  2. #32
    Senior Member
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    Jul 2016
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    Haslet TX
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    Re: What is a FOREIGN KEY ?

    In the context of relational databases, a foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key in the first table.

  3. #33
    Senior Member
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    Jan 2016
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    Re: What is a FOREIGN KEY ?

    A foreign key is a column or group of columns in a relational data source desk that provides a web link between data in two platforms.

  4. #34
    Senior Member
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    Sep 2015
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    jalandhar
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    Re: What is a FOREIGN KEY ?

    Foreign keys are defined as the column or combination of column in which data of two column are related to each other.

  5. #35
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    Jun 2017
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    brasil
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    Re: What is a FOREIGN KEY ?

    the foreign key is defined in a second table, but it refers to the primary key or a unique key in the first table.
    For example, a table called Employee has a primary key called employee_id. Another table called Employee Details has a foreign key which references employee_id in order to uniquely identify the relationship between both tables.

  6. #36
    Senior Member
    Join Date
    May 2016
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    139

    Re: What is a FOREIGN KEY ?

    A foreign key is a column or group of columns in a relational data source desk that provides a web link between data in two platforms.

  7. #37
    Senior Member
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    Aug 2017
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    Chandigarh
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    Re: What is a FOREIGN KEY ?

    Foreign key consist the primary key and unique key

  8. #38
    Member
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    Dec 2017
    Location
    Santa Clara, California, USA
    Posts
    81

    Re: What is a FOREIGN KEY ?

    A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables. It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.

  9. #39
    Junior Member
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    Feb 2018
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    Hyderabad
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    23

    Re: What is a FOREIGN KEY ?

    A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables.

  10. #40
    Senior Member
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    Feb 2018
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    Haryana
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    105

    Re: What is a FOREIGN KEY ?

    Quote Originally Posted by samir09 View Post
    A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables. It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.

    Bulkmailstack
    I agree with you

  11. #41
    Junior Member
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    Feb 2018
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    16

    Re: What is a FOREIGN KEY ?

    A foreign key is a relationship between two tables in a database.It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.
    Last edited by RitaRankin; 02-14-2018 at 06:18 AM.

  12. #42
    Junior Member
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    Feb 2018
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    Re: What is a FOREIGN KEY ?

    This was very insightful! Thanks so much.

  13. #43
    Junior Member
    Join Date
    Mar 2018
    Posts
    27

    Re: What is a FOREIGN KEY ?

    A foreign key is a relationship between two tables in a database.The values of foreign key column are derived from the column of different table especially which are defined as primary key or unique key.

  14. #44
    Senior Member
    Join Date
    Jan 2018
    Posts
    106

    Re: What is a FOREIGN KEY ?

    A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables.

  15. #45
    Senior Member
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    Aug 2017
    Location
    Chandigarh
    Posts
    273

    Re: What is a FOREIGN KEY ?

    A FOREIGN KEY is a key used to link two tables together.

 

 
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