'Relational views' presentation slideshows

Chapter 12: Ontologies and Knowledge Representation

Chapter 12: Ontologies and Knowledge Representation. PRINCIPLES OF DATA INTEGRATION. ANHAI DOAN ALON HALEVY ZACHARY IVES. Outline. Introduction to Knowledge Representation and its relevance to data integration Description Logics: a family of KR languages

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???????? 5. SQL Data Definition Language ??? ????? ??????? ????????? ?????? ????????? ( QBE). SQL Data Definition. The Data Definition Language (DDL) of SQL is used to CREATE, DROP and ALTER the descriptions of the relations in the database CREATE TABLE DEPARTMENT

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Data Analysis

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