Question
Which of the following is used to uniquely identify a
record in a database table?Solution
"A Primary Key uniquely identifies each record in a database table. It ensures no two records have the same value in the specified field. A table can have only one primary key. Primary keys cannot contain NULL values. Used for indexing and referencing."
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In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate opti...
In each of the questions, a sentence has been divided into four parts, one of which may contain an error. Identify that fragment and mark it as your an...
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Jane always looks down on anyone who is poor.