Discussion: Data Independence Concept Discuss/define the data independence concept provided by the three-schema database systems architecture. What are the two types of data independence? Which type is much harder to achieve and why?
Discuss the main characteristics of the database approach and how it differs from traditional file systems. What are the responsibilities of the DBA and the database designers?
Databases In this chapter we defined a database as a collection of related data, where data means recorded facts. A typical database represents some aspect of the real world and is used for specific purposes by one or more groups of users. A DBMS is a generalized software package for implementing and maintaining a computerized […]