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Hanuman_2000 Posted 20 years ago
Grammar

predicate

Hello,

1. An assertion is a predicate expressing a condition that we wish the database always to satisfy.

2. The where clause corresponds to the selection predicate of the relational algebra.

What is meaning of "predicate" here?
  

Top answer

Any group of words that designates a property or characteristic of something is a predicate. Suppose you want to find every description in your database that contains the word "amount". Here's the predicate you are interested in: contains the word "amount" .

— CalifJim

  • Any group of words that designates a property or characteristic of something is a predicate.
  • Suppose you want to find every description in your database that contains the word "amount".
  • Here's the predicate you are interested in: contains the word "amount" .
  • This group of words designates a certain property or characteristic that you are looking for in the database.
  • Suppose now that you want to find every total in your database that is greater than 100,000.
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2 Answers
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Any group of words that designates a property or characteristic of something is a predicate.

Suppose you want to find every description in your database that contains the word "amount".
Here's the predicate you are interested in: contains the word "amount".
This group of words designates a certain property or characteristic that you are looking for in the database.
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Hello,

Thanks Sir.(Mr. CJ)
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