SQL SERVER – Clustered and Nonclustered Indexes Described

An index is an on-disk structure associated with a table or view that speeds retrieval of rows from the table or view. An index contains keys built from one or more columns in the table or view. These keys are stored in a structure (B-tree) that enables SQL Server to find the row or rows … Continua a leggere SQL SERVER – Clustered and Nonclustered Indexes Described →