'Several indexes' diaporamas de présentation

File Organizations and Indexing

File Organizations and Indexing. Chapter 8. Alternative File Organizations. Many alternatives exist, each ideal for some situation , and not so good in others: Heap files: Suitable when typical access is a file scan retrieving all records.

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Overview of Indexing

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File Organizations and Indices

File Organizations and Indices. Unordered (Heap) Files. Simplest file structure: contains records in no particular order; default in many systems. As file grows and shrinks, disk pages are allocated and de-allocated. To support record-level operations, we must:

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