what is unique key?
Answer Posted / guest
It is a constraint used to avoid duplication of values
within the row of a specified column or set of columns in a
table. It can also allow null values
| Is This Answer Correct ? | 20 Yes | 5 No |
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HI Friends Myself Manoj,i am from bengaluru.i have 1 yr of exp in PLSQL but not upto the mark..now attending interviews but m not able to clear even 1 round..i have attended 3 interviews till today.purpose of writing this query is,i want to know the intreview topics that interviewer going to ask frequently,mainly SCENARIO based questions.IF anybody have any PLSQL projects please give it to me,it will helps me alot.Thanks for your patience.
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