COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ is a unique field by which records are identified in a table.
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Name
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Field
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Primary Key
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None
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Explanation:
Detailed explanation-1: -A primary key consists of one or more fields that uniquely identify each record that you store in the table. Often, there is a unique identification number, such as an ID number, a serial number, or a code, that serves as a primary key.
Detailed explanation-2: -address will be a unique field in a table .
Detailed explanation-3: -A primary key is a field or set of fields with values that are unique throughout a table.
Detailed explanation-4: -To identify a primary key for a table or file, you locate a column that’s values uniquely identify the rows in the selected table. Additionally, you can verify that a primary key that is defined in the data source is the true primary key.
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