What are the questions of the ASP.NET written test

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1. The SQL part of the ASP.NET written test:

Q: the difference between clustered and nonclustered indexes:

Answer: the content of the text itself is a kind of directory arranged according to certain rules called "clustered index". The ASP.NET server directory is purely a directory, and the text is sorted purely as a text, which is called a nonclustered index.

Q: what is the meaning of an index? Simple explanation of Cluster Index (clustered), its advantages and disadvantages

Answer: clustered indexes usually speed up UPDATE and DELETE operations because they need to read a large amount of data. It can take a long time to create or modify a clustered index because the rows of the table are reorganized on disk when performing both operations. But INSERT will slow down. Consider using a clustered index for columns that contain a limited number of * values, such as the state column, which contains only 50 state codes. A query that returns a range of values using the following operators: BETWEEN, >, > =, <, and