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Can a filed occur in several field groups.
Yes. But it leads to redundant data redundancy.
write a database program for concurrency transaction in a bank
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Before defines the second type of integrity constraint, viz., Entity Integrity, we should be well-known with the concept of NULL. Mostly, NULL is intended as a basis for dealing
what are information system hirarchy?
what is definition hierarchical data model
Adding Redundant Associations for Efficient Access Redundant associations do not add any type of information, therefore during design we should actually examine structure of o
Describe the various types of Online Analytical Processing (OLAP) tools and briefly discuss how the support common analytical operations.
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
case study
Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c
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