Databases 1

University of South Africa

Hier vind je de beste samenvattingen om te slagen voor Databases 1. Er zijn o.a. samenvattingen, aantekeningen en oefenvragen beschikbaar.

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Answers to Review Questions
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43

oktober 2021

2021/2022

A+
Answers to Review Questions 1. Name and discuss the different levels of data abstraction as defined by ANSI/SPARC. Conceptual Located at the abstraction apex, the conceptual model represents a global view of the data. It forms the basis of the conceptual schema, which provides a relatively easily understood bird's-eye view of the data environment. Since the conceptual model focuses on the main data objects and avoids detail, it exhibits both software and hardware independence. The most ...
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