Why not construct an index for each column in each database table?
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Why not construct an index for each column in each
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- A select operation in a relational database decreases the size of a table by deleting columns that fulfill certain criteria.Is it correct or incorrect?In a relational database, a select operation reduces the size of a table by removing columns that meet certain requirements.Is it accurate or inaccurate?Why should not an index be generated for every field in every database table?
- By removing columns that meet particular criteria, the select process in a relational database may reduce the size of a table.There are two ways to look at it.What is the impact of having sparse columns in a relational database table?In a relational database, the number of columns in a table that are able to satisfy the constraints that have been defined may be decreased by the use of an operation called select. Which is it: the right answer or the erroneous answer?
- In a relational database, the number of columns in a table that are able to satisfy the constraints that have been defined may be decreased by the use of an operation called select.Which is it: the right answer or the erroneous answer?When working with a relational database, a select operation may be used to reduce the amount of space used by a table by removing columns that meet certain requirements.Is this the right answer or the wrong answer?In a relational database, the size of a table may be reduced via a select operation by eliminating columns from the table that meet a set of predefined requirements.Is there a mistake in my understanding of this?
- In a relational database, a select operation is used to minimise the size of a table by eliminating columns that fulfil certain criteria.Is this the right answer or the wrong answer?With a relational database, you may reduce the size of a table using the select operation by excluding columns that no longer meet your requirements.Is that the right answer?In a relational database, you may narrow down the number of columns in a table that match your criteria by using the select operation.Is it the right or wrong answer?