Clustered vs Non-Clustered Index | HEAP vs Clustered Table | SQL Index Page | Non-Clustered Index | Clustered Index
SQL 8KB Page, IAM Page, SQL Clustered Index, Clustered vs Non-clustered index, Non-Clustered Index, Index Page, IAM Page, Data Page, SQL Heap Table, Table Scan vs Index Scan, Table Scan vs Clustered Index Scan, Primary Key vs Clustered Index
Agenda:
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Q01. What is the difference between HEAP and NON-HEAP Table in SQL?
Q02. What is the difference between CLUSTERED INDEX and NON-CLUSTERED INDEX?
Q03. What is Index in SQL? Why we need Indexes?
Q04. What are the different types of Indexes in SQL?
Q05. Does index creation cause extra memory overheads?
Q06. Why an index is called a double-edged sword?
Q07. Why non-clustered index is slower than the clustered index?
Q08. What is the IAM page in SQL? or What is Index Allocation Map Page?
Q09. What does the SQL Server do, when you create an index in any table?
Q10. How index is different from actual data? Where does the index stored in the Database?
Q11. What is the main difference between a Non-clustered index that is built over a Heap table and a Non-clustered index that is built over a Clustered table?
Q12. What does the leaf node of the non-clustered index store if there is no clustered index in the table?
Q13. What is the difference between Table Scan and Clustered Index Scan?
Q14. When the IAM page is created? How many IAM pages can be there for a table?
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