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  1. #16
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    jalandhar
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    Re: What is a FOREIGN KEY ?

    A foreign key (FK) is a column or combination of columns that is used to establish and enforce a link between the data in two tables.

  2. #17
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    Mar 2016
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    Re: What is a FOREIGN KEY ?

    You can create a foreign key by defining a FOREIGN KEY constraint when you create or modify a table

  3. #18
    Junior Member
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    Mar 2016
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    10

    Re: What is a FOREIGN KEY ?

    A foreign key is a field in one table that uniquely identifies a row of another table. In other words, the foreign key is defined in a second table, but it refers to the primary key in the first table.

  4. #19
    Junior Member
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    Apr 2016
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    21

    Re: What is a FOREIGN KEY ?

    A foreign key is a key used to link two tables together. This is sometimes called a referencing key.
    Foreign Key is a column or a combination of columns whose values match a Primary Key in a different table.

  5. #20
    Member
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    Dec 2015
    Location
    jalandhar
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    71

    Re: What is a FOREIGN KEY ?

    A foreign key (FK) is a column or combination of columns that is used to establish and enforce a link between the data in two tables. You can create a foreign key by defining a FOREIGN KEY constraint when you create or modify a table.

  6. #21
    Senior Member
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    Jun 2016
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    108

    Re: What is a FOREIGN KEY ?

    A foreign key (FK) is a column or combination of columns that is used to establish and enforce a link between the data in two tables to control the data that can be stored in the foreign key table. In a foreign key reference, a link is created between two tables when the column or columns that hold the primary key value for one table are referenced by the column or columns in another table. This column becomes a foreign key in the second table.

  7. #22
    Member
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    Jun 2016
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    72

    Re: What is a FOREIGN KEY ?

    A foreign key is a field in a relational table that matches the primary key column of another table. The foreign key can be used to cross-reference tables.

  8. #23
    Senior Member
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    Jul 2015
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    India
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    Re: What is a FOREIGN KEY ?

    Yes it is group of columns in which data of one column is related to another column data.

  9. #24
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    Jul 2016
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    Bangalore
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    41

    Re: What is a FOREIGN KEY ?

    The foreign key is column in the relational database provide link between data into two tables it act as cross reference between tables because it reference the primary key in another table.

  10. #25
    min
    min is offline
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    Oct 2016
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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.[1][2][3] In simpler words, the foreign key is defined in a second table, but it refers to the primary 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 the tables.
    Instaeasy Review - The powerful software that allows you to manage the activities of your Instagram account and generate the leads as well as create more sales in this potential market.

  11. #26
    Senior Member
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    Oct 2016
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    149

    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.

  12. #27
    Senior Member
    Join Date
    Oct 2016
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    157

    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.

  13. #28
    Senior Member
    Join Date
    Oct 2016
    Location
    India
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    172

    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. In simpler words, the foreign key is defined in a second table, but it refers to the primary key in the first table.

  14. #29
    Member
    Join Date
    Oct 2016
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    44

    Re: What is a FOREIGN KEY ?

    In the context of relational databases, a foreign key is a field (or columns or collection of fields) in one table that uniquely identifies a row of another table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key in the first table.
    You may have many FK in your complex databases
    Last edited by thgk111; 10-25-2016 at 08:46 PM.

  15. #30
    Senior Member
    Join Date
    Oct 2016
    Posts
    101

    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.

 

 
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