Indexes and abstracts in SQL Server

Tags:
Indexes
SQL Server
In regards to a SQL Server, what is an index? Also, what is an abstract, and could you please explain the types of both of these items?

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An index is an object in the database which contains one or more columns from a single table. The data within the index is sorted which makes it much faster to search than searching the table it self.

There are a couple of blog posts which I’ve made about indexes.

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