Write the short answers for the given question. Answer in 3-5 line maximum. A. Give examples of systems in which it may make sense to use traditional file processing instead of a database approach. Why? B. Why do we need mappings among schema levels? How do different schema definition languages support this architecture? C. Under what conditions can an attribute of a binary relationship type be migrated to become an attribute of one of the participating entity types?

Write the short answers for the given question. Answer in 3-5 line maximum. A. Give examples of systems in which it may make sense to use traditional file processing instead of a database approach. Why? B. Why do we need mappings among schema levels? How do different schema definition languages support this architecture? C. Under what conditions can an attribute of a binary relationship type be migrated to become an attribute of one of the participating entity types?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write the short answers for the given question. Answer in 3-5 line maximuт. A. Give examples of systems in which it may make sense to use traditional file processing instead of a database approach. Why? B. Why do we need mappings among schema levels? How do different schema definition languages support this architecture? C. Under what conditions can an attribute of a binary relationship type be migrated to become an attribute of one of the participating entity types? D. List any 2 cases where the use of a null value would be appropriate.