8 Cs5226 PPTs View free & download

CS5226 Hardware Tuning PowerPoint PPT Presentation

CS5226 Hardware Tuning - ... drives is often referred to as RAID 0. Only RAID 0, 1, 3 and 5 are commonly ... RAID 2 and 4 do not offer any significant advantages over these other types ...

... drives is often referred to as RAID 0. Only RAID 0, 1, 3 and 5 are commonly ... RAID 2 and 4 do not offer any significant advantages over these other types ...

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CS5226 2002 Hardware Tuning PowerPoint PPT Presentation

CS5226 2002 Hardware Tuning - Parity Check - Classical ... A single parity bit can only reveal single bit errors since if an even number of ... Take result of XOR and XOR with parity stripe. ...

Parity Check - Classical ... A single parity bit can only reveal single bit errors since if an even number of ... Take result of XOR and XOR with parity stripe. ...

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CS5226 2002 Operating System PowerPoint PPT Presentation

CS5226 2002 Operating System - 7. Database Buffer Size. Buffer too small, then hit ratio too small. hit ratio = (logical acc. ... SQL Server 7 on Windows 2000. Scan query: ...

7. Database Buffer Size. Buffer too small, then hit ratio too small. hit ratio = (logical acc. ... SQL Server 7 on Windows 2000. Scan query: ...

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CS5226 - Can often hold top levels in buffer pool: 3 - Index Tuning. 21. A Note ... Observe `toss' of index entry (on right), and `pull down' of index entry (below). 30 ...

Can often hold top levels in buffer pool: 3 - Index Tuning. 21. A Note ... Observe `toss' of index entry (on right), and `pull down' of index entry (below). 30 ...

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Buffer Management PowerPoint PPT Presentation

Buffer Management - Correlated Reference Period (CRP) No penalty or credit for refs within CRP ... { if (t LAST(p) CRP // eligible for replacement. and HIST(q,K) min { // max ...

Correlated Reference Period (CRP) No penalty or credit for refs within CRP ... { if (t LAST(p) CRP // eligible for replacement. and HIST(q,K) min { // max ...

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Principles of Query Processing PowerPoint PPT Presentation

Principles of Query Processing - ... result = R * selectivity. Scan. Clustered index: Good. Non-clustered index: Good for low selectivity. Worse than scan for high selectivity. SELECT * FROM Reserves ...

... result = R * selectivity. Scan. Clustered index: Good. Non-clustered index: Good for low selectivity. Worse than scan for high selectivity. SELECT * FROM Reserves ...

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Recovery Tuning - DB2 UDB v7.1 on Windows 2000. 5 % performance improvement if log is located on a different disk ... SQL Server 7 on Windows 2000. Scan query: ...

DB2 UDB v7.1 on Windows 2000. 5 % performance improvement if log is located on a different disk ... SQL Server 7 on Windows 2000. Scan query: ...

CS5226 2002 Data Warehouse - Bitmap Indexes. Suitable for deep and broad, static, many query attributes ... Bitmaps are best suited for multiple conditions on several attributes, each ...

Bitmap Indexes. Suitable for deep and broad, static, many query attributes ... Bitmaps are best suited for multiple conditions on several attributes, each ...

Cs5226 PowerPoint PPT Presentations