Which field is used as a primary key?

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  • Which field is used as a primary key?


A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because ...
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Positive: 69 %
Summary: in this tutorial, you will learn how to use MySQL primary key constraint to create a primary key for the table. Introduction to MySQL primary key.
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Positive: 66 %

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Every table in your database should have a primary key — a field or set of fields with a unique value for each record stored in the table. You can use ...
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Positive: 69 %
SQL > Constraint > Primary Key. A primary key is used to ... of a primary key cannot be NULL. Primary keys can ... that field. Primary Key On ...
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Positive: 64 %
The definition of Primary Key defined and ... a database of news articles might use both the title and date fields to uniquely ... Primary Memory › Tech ...
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Positive: 50 %
A database dictionary. ... Key fields are also used in relational databases to maintain the structural ... primary key: A field that uniquely identifies a ...
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Positive: 27 %

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