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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
multidimensional data model
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Explain Authorization and Integrity Manager ? Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to acce
Enumerate or state the steps in creating a relevant database of a shop.
What does Aggregation mean?
What is Hierarchical DBMS In HDBMS, data is structured in a tree like manner. There is a parent-child relationship between data items and the data model is very suitable for re
What is a dataset? A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Dataset
Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
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