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Lecture Database system concepts (6/e): Chapter 21 - Silberschatz, Korth, Sudarshan

Textual data is unstructured, unlike the rigidly structured data in relational databases. The term information retrieval generally refers to the querying of unstructured textual data. Information-retrieval systems have much in common with database systems, in particular, the storage and retrieval of data on secondary storage. Chapter 21 describes information-retrieval techniques for querying textual data, including hyperlink-based techniques used in Web search engines.

Từ khóa: Lecture Database system concepts, Database system concepts, Database system, Database design, Information retrieval, Relevance using hyperlinks

25 p tailieu_husc 26/08/2023 30 0

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