Answer
TempDB stores temp tables, spills, versioning, and intermediate results. Best practices include multiple equal-sized data files and SSD storage.
Quick Answer
TempDB is a shared system database used for temporary tables, table variables, sort spills, row versioning (for snapshot isolation), and hash join/sort intermediate results. High TempDB contention (allocation page contention) can bottleneck the entire server. Multiple data files and fast storage mitigate this.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ