What is index fragmentation and how does it affect database performance?
Index fragmentation occurs when the logical order of the index does not match the physical order of the data. This can lead to inefficient data retrieval.
How can I check the level of fragmentation in my database?
You can use database management tools or specific SQL queries to analyze index fragmentation levels. For example, in SQL Server, you can use the sys.dm_db_index_physical_stats
function.
What are the consequences of high index fragmentation?
High index fragmentation can lead to slower query performance, increased I/O operations, and longer maintenance times.
How can I reduce index fragmentation?
You can reduce index fragmentation by reorganizing or rebuilding indexes. Reorganizing is less resource-intensive, while rebuilding can be more effective for heavily fragmented indexes.
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